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The VASP Manual: Difference between revisions

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{| class="vasp-dark-link-panel" cellpadding="5" cellspacing="15" style="width: 100%; border-spacing: 15px;"
<div style="font-size: 1.6em; font-weight: 300; color: var(--vdefault-fg); letter-spacing: 0.02em;">Welcome to the '''VASP Wiki'''</div>
| style="background-color:var(--vpurple-bg);"| [[Welcome|Take a tour]] || style="background-color:var(--vpurple-bg);"|[[Installing VASP.6.X.X|Install VASP]] || style="background-color:var(--vpurple-bg);"| [https://www.vasp.at/sign_in/registration_form/ Get a license]
<div style="font-size: 1.0em; color: var(--vdefault-fg); opacity: 0.7; margin-top: 6px;">The complete reference for the Vienna Ab initio Simulation Package</div>
</div>
 
<!-- ===== QUICK LINKS — 2×2 CARD GRID ===== -->
<div class="vasp-dark-link-panel" style="display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin: 0 auto 30px auto; max-width: 900px;">
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vpurple-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128640;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[[Welcome|Take a tour]]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Get started with VASP</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vpurple-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128421;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[[Installing VASP.6.X.X|Install VASP]]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Step-by-step installation</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vpurple-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128273;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at/sign_in/registration_form/ Get a license]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Register for access</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vred-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128196;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[[Changelog|Release notes]]</div>
<div style="font-size: 0.85em; opacity: 0.8;">What's new</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vred-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#127760;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at VASP website]</div>
<div style="font-size: 0.85em; opacity: 0.8;">News &amp; announcements</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vred-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128172;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at/forum/ Forum]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Ask the community</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vcyan-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#127891;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at/learn/ Learn]</div>
<div style="font-size: 0.85em; opacity: 0.8;">[[:Category:Examples|Examples]] · [[:Category:Tutorials|Wiki tutorials]]</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vcyan-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128013;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">{{py4vasp}}</div>
<div style="font-size: 0.85em; opacity: 0.8;">Python interface</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vcyan-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#128279;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at/sign_in/portal Portal]</div>
<div style="font-size: 0.85em; opacity: 0.8;">License management</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vblue-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#9888;&#65039;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[[Known issues]]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Bugs &amp; workarounds</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vblue-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#127916;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.vasp.at/tutorials/latest/ Tutorials]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Hands-on guides</div>
</div>
 
<div style="flex: 1 1 200px; max-width: 220px; background: var(--vblue-bg); border-radius: 8px; padding: 18px 14px; text-align: center;">
<div style="font-size: 1.5em;">&#127909;</div>
<div style="font-weight: bold; margin: 6px 0 4px 0;">[https://www.youtube.com/channel/UCBATkNZ7pkAXU9tx7GVhlaw Lectures]</div>
<div style="font-size: 0.85em; opacity: 0.8;">Video lectures</div>
</div>
 
</div>
 
<!-- ===== FEATURED TOPICS ===== -->
 
== Featured topics ==
 
<!-- ---------- FOUNDATIONS ---------- -->
<div style="margin: 20px 0 8px 0; padding: 6px 12px; background: var(--vpurple-bg); border-radius: 6px 6px 0 0; display: inline-block; font-weight: bold; font-size: 1.05em;">&#128218; Foundations</div>
{| class="wikitable" style="width: 100%; border-collapse: separate; border-spacing: 0; border-radius: 0 6px 6px 6px; overflow: hidden;"
|-
|-
! scope="col" style="width: 22%; padding: 10px 14px; background: var(--vpurple-bg); border: none;" | '''Topic'''
|style="background-color:var(--vred-bg);"| [[Changelog|Release notes]] ||style="background-color:var(--vred-bg);"| [https://www.vasp.at VASP website and news] ||style="background-color:var(--vred-bg);"| [https://www.vasp.at/forum/ Forum]
! scope="col" style="padding: 10px 14px; background: var(--vpurple-bg); border: none;" | '''Description'''
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vpurple-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Theory| Theoretical background]]
|style="background-color:var(--vcyan-bg);"|[https://www.vasp.at/learn/ Learn], [[:Category:Examples|examples]], [[:Category:Tutorials|Wiki tutorials]] ||style="background-color:var(--vcyan-bg);"| {{py4vasp}} ||style="background-color:var(--vcyan-bg);"| [https://www.vasp.at/sign_in/portal Portal]
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | We collect '''theory pages''' from all the different areas VASP offers functionalities. These can also be found in the corresponding category of the topic. For instance, the article on the [[Blocked-Davidson algorithm]] is also linked from the [[electronic minimization]] page.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vpurple-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Calculation setup| Calculation setup]]
|style="background-color:var(--vblue-bg);"| [[Known issues]] ||style="background-color:var(--vblue-bg);"| [https://www.vasp.at/tutorials/latest/ Tutorials]||style="background-color:var(--vblue-bg);"| [https://www.youtube.com/channel/UCBATkNZ7pkAXU9tx7GVhlaw Lectures]
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | The '''computational setup''' considers the [[installation]], the input and output [[files]], [[performance]], etc. To learn how to set up your calculation, it is probably best to look for a [[:Category:Howto|how-to page]], e.g., [[setting up an electronic minimization]], [[band-structure calculation using hybrid functionals]], [[constructing Wannier orbitals]], [[structure optimization]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vpurple-bg);" | [[:Category:Performance| Performance]]
| style="padding: 10px 14px;" | [[:Category:Parallelization| Parallelization]], [[:Category:Memory|memory management]], profiling, etc.
|}
|}


<!-- ---------- ELECTRONIC STRUCTURE ---------- -->
== Featured topics ==
<div style="margin: 28px 0 8px 0; padding: 6px 12px; background: var(--vred-bg); border-radius: 6px 6px 0 0; display: inline-block; font-weight: bold; font-size: 1.05em;">&#9889; Electronic structure</div>
{| style="width: 100%" class="sortable wikitable"
{| class="wikitable" style="width: 100%; border-collapse: separate; border-spacing: 0; border-radius: 0 6px 6px 6px; overflow: hidden;"
|-
|-
! scope="col" style="width: 22%; padding: 10px 14px; background: var(--vred-bg); border: none;" | '''Topic'''
! scope="col" style="width: 20%; padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)" | '''Category'''
! scope="col" style="padding: 10px 14px; background: var(--vred-bg); border: none;" | '''Description'''
! scope="col" class="unsortable" style="padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)" | ''subtopics (amongst others)''
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vred-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Electronic minimization| Electronic minimization]]
| class="vasp-dark-link-panel" style="background-color:var(--vpurple-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Theory| Theoretical background]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| We collect '''theory pages''' from all the different areas VASP offers functionalities. These can also be found in the corresponding category of the topic. For instance, the article on the [[Blocked-Davidson algorithm]] is also linked from the [[electronic minimization]] page.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | '''Electronic minimization''' is the central task in many calculations. Here, you find pages describing the [[self-consistency cycle]], different algorithms, e.g., [[blocked-Davidson algorithm]], [[RMM-DIIS]], [[direct optimization of the orbitals]], and related topics like [[preconditioning]], [[density mixing]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vred-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Electronic ground-state properties| Electronic ground-state properties]]
|class="vasp-dark-link-panel" style="background-color:var(--vpurple-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Calculation setup| Calculation setup]] || style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)" | The '''computational setup''' considers the [[installation]], the input and output [[files]], [[performance]], etc. To learn how to set up your calculation, it is probably best to look for a [[:Category:Howto|how-to page]], e.g., [[setting up an electronic minimization]], [[band-structure calculation using hybrid functionals]], [[constructing Wannier orbitals]], [[structure optimization]], etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Band structure|Band structure]], [[:Category:Density of states |density of states]], partial DOS and on-site charge and magnetization ({{TAG|LORBIT}}), [[:Category:Electrostatics |electrostatics]], [[:Category:Charge density|charge density]], [[:Category:Potential|potential]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vred-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Magnetism| Spin degree of freedom]]
|class="vasp-dark-link-panel" style="background-color:var(--vred-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"|[[:Category:Electronic minimization| Electronic minimization]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| '''Electronic minimization''' is the central task in many calculations. Here, you find pages describing the [[self-consistency cycle]], different algorithms, e.g., [[blocked-Davidson algorithm]], [[RMM-DIIS]], [[direct optimization of the orbitals]], and related topics like [[preconditioning]], [[density mixing]], etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Spin-orbit coupling, noncollinear magnetism, spin spirals, constrained magnetism, etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vred-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Exchange-correlation functionals|Exchange-correlation functionals]]
|class="vasp-dark-link-panel" style="background-color:var(--vred-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Electronic ground-state properties| Electronic ground-state properties]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Band structure|Band structure]], [[:Category:Density of states |density of states]], partial DOS and on-site charge and magnetization ({{TAG|LORBIT}}), [[:Category:Electrostatics |electrostatics]], [[:Category:Charge density|charge density]], [[:Category:Potential|potential]], etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Exchange-correlation_functionals|LDA]], [[:Category:Exchange-correlation_functionals|GGA]], [[:Category:Exchange-correlation_functionals|meta-GGA]], [[:Category:DFT+U|DFT+U]], [[:Category:Hybrid functionals|hybrid functionals]], [[:Category:van_der_Waals_functionals|van der Waals functionals]].
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vred-bg);" | [[:Category:Wannier functions| Localized basis and projection]]
|class="vasp-dark-link-panel" style="background-color:var(--vred-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Magnetism| Spin degree of freedom]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Spin-orbit coupling, noncollinear magnetism, spin spirals, constrained magnetism, etc.
| style="padding: 10px 14px;" | Obtaining [[Wannier functions]], SCDM, partial DOS and on-site charge and magnetization ({{TAG|LORBIT}}), [[Constrained-random-phase approximation]]
|-
|}
|class="vasp-dark-link-panel" style="background-color:var(--vred-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Exchange-correlation functionals|Exchange-correlation functionals]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Exchange-correlation_functionals|LDA]], [[:Category:Exchange-correlation_functionals|GGA]], [[:Category:Exchange-correlation_functionals|meta-GGA]], [[:Category:DFT+U|DFT+U]], [[:Category:Hybrid functionals|hybrid functionals]], [[:Category:van_der_Waals_functionals|van der Waals functionals]].
 
|-
<!-- ---------- STRUCTURE & DYNAMICS ---------- -->
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Symmetry| Symmetry and structure]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Crystal symmetry, [[:Category:Crystal momentum|reciprocal space]], surfaces, pair-correlation function for liquids, etc.
<div style="margin: 28px 0 8px 0; padding: 6px 12px; background: var(--vcyan-bg); border-radius: 6px 6px 0 0; display: inline-block; font-weight: bold; font-size: 1.05em;">&#9881;&#65039; Structure &amp; dynamics</div>
|-
{| class="wikitable" style="width: 100%; border-collapse: separate; border-spacing: 0; border-radius: 0 6px 6px 6px; overflow: hidden;"
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Ionic minimization| Ionic minimization]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[Structure optimization]], ionic-minimization methods, [[:Category:Forces|forces]], [[:Category:Transition States|transition states]], etc.
|-
|-
! scope="col" style="width: 22%; padding: 10px 14px; background: var(--vcyan-bg); border: none;" | '''Topic'''
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Molecular dynamics| Molecular dynamics]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Barostats, [[:Category:Thermostats|thermostats]], [[:Category:Ensembles|ensembles]], etc.
! scope="col" style="padding: 10px 14px; background: var(--vcyan-bg); border: none;" | '''Description'''
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Symmetry| Symmetry and structure]]
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Ensemble properties| Ensemble properties]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Monitoring geometric parameters, pair-correlation function, thermal conductivity, diffusion, etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Crystal symmetry, [[:Category:Crystal momentum|reciprocal space]], surfaces, pair-correlation function for liquids, etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Ionic minimization| Ionic minimization]]
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Advanced molecular-dynamics sampling| Advanced molecular-dynamics sampling]] ||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[Interface pinning]], [[constrained molecular dynamics]], [[metadynamics]], [[thermodynamic integration]], etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | [[Structure optimization]], ionic-minimization methods, [[:Category:Forces|forces]], [[:Category:Transition States|transition states]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Molecular dynamics| Molecular dynamics]]
|class="vasp-dark-link-panel" style="background-color:var(--vcyan-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Machine-learned force fields| Machine-learned force fields]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Training and application of force fields.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Barostats, [[:Category:Thermostats|thermostats]], [[:Category:Ensembles|ensembles]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Ensemble properties| Ensemble properties]]
|class="vasp-dark-link-panel" style="background-color:var(--vblue-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Phonons| Phonons]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Lattice vibrations, [[Phonons_from_finite_differences | finite differences]], [[Computing_the_phonon_dispersion_and_DOS | phonon dispersion relation]].
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Monitoring geometric parameters, pair-correlation function, thermal conductivity, diffusion, etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Advanced molecular-dynamics sampling| Advanced molecular-dynamics sampling]]
|class="vasp-dark-link-panel" style="background-color:var(--vblue-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Electron-phonon_interactions | Electron-phonon interactions]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[Bandgap_renormalization_due_to_electron-phonon_coupling | Band-structure renormalization]], [[Transport_coefficients_including_electron-phonon_scattering | transport]], [[Electron-phonon_interactions_from_Monte-Carlo_sampling |stochastic sampling]].
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | [[Interface pinning]], [[constrained molecular dynamics]], [[metadynamics]], [[thermodynamic integration]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vcyan-bg);" | [[:Category:Machine-learned force fields| Machine-learned force fields]]
|class="vasp-dark-link-panel" style="background-color:var(--vblue-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Linear response| Response theory]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Static and frequency-dependent [[:Category:Dielectric properties|dielectric properties]], Berry phases, spectroscopy (UV, VIS, [[:Category:XAS|X-ray]], [[:Category:NMR|NMR]]), [[:Category:Phonons|phonons]], etc.
| style="padding: 10px 14px;" | Training and application of force fields.
|}
 
<!-- ---------- RESPONSE & MANY-BODY ---------- -->
<div style="margin: 28px 0 8px 0; padding: 6px 12px; background: var(--vblue-bg); border-radius: 6px 6px 0 0; display: inline-block; font-weight: bold; font-size: 1.05em;">&#128300; Response &amp; many-body theory</div>
{| class="wikitable" style="width: 100%; border-collapse: separate; border-spacing: 0; border-radius: 0 6px 6px 6px; overflow: hidden;"
|-
|-
! scope="col" style="width: 22%; padding: 10px 14px; background: var(--vblue-bg); border: none;" | '''Topic'''
|class="vasp-dark-link-panel" style="background-color:var(--vblue-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Many-body perturbation theory| Many-body perturbation theory]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| ACFDT, BSE, GW, MP2, cRPA.
! scope="col" style="padding: 10px 14px; background: var(--vblue-bg); border: none;" | '''Description'''
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vblue-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Phonons| Phonons]]
<!--| [[:Category:Defects| Defects and doping]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Dipole corrections for defects in solids, VCA, etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Lattice vibrations, [[Phonons_from_finite_differences | finite differences]], [[Computing_the_phonon_dispersion_and_DOS | phonon dispersion relation]].
|- -->
<!-- | [[:Category:Core states| Core states]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Frozen-core approximation, X-ray abpsorption spectra (SCH calculations), ICORELEVEL, etc.
|- -->
|class="vasp-dark-link-panel" style="background-color:var(--vred-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Wannier functions| Localized basis and projection]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| Obtaining [[Wannier functions]], SCDM, partial DOS and on-site charge and magnetization ({{TAG|LORBIT}}), [[Constrained-random-phase approximation]]
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vblue-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Electron-phonon_interactions | Electron-phonon interactions]]
|class="vasp-dark-link-panel" style="background-color:var(--vpurple-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Performance| Performance]]||style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:Parallelization| Parallelization]], [[:Category:Memory|memory management]], profiling, etc.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | [[Bandgap_renormalization_due_to_electron-phonon_coupling | Band-structure renormalization]], [[Transport_coefficients_including_electron-phonon_scattering | transport]], [[Electron-phonon_interactions_from_Monte-Carlo_sampling |stochastic sampling]].
<!---
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vblue-bg); border-bottom: 1px solid rgba(128,128,128,0.15);" | [[:Category:Linear response| Response theory]]
|class="vasp-dark-link-panel" style="background-color:var(--vpurple-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"| [[:Category:VASP6|Outlook]]|| style="background: var(--vdefault-bg); padding:5px; border-style: solid; border-width: 15px; border-color: var(--vdefault-bg)"|Features that will only be available in VASP.6.X.
| style="padding: 10px 14px; border-bottom: 1px solid rgba(128,128,128,0.15);" | Static and frequency-dependent [[:Category:Dielectric properties|dielectric properties]], Berry phases, spectroscopy (UV, VIS, [[:Category:XAS|X-ray]], [[:Category:NMR|NMR]]), [[:Category:Phonons|phonons]], etc.
|-
|-
| class="vasp-dark-link-panel" style="padding: 10px 14px; background: var(--vblue-bg);" | [[:Category:Many-body perturbation theory| Many-body perturbation theory]]
--->
| style="padding: 10px 14px;" | ACFDT, BSE, GW, MP2, cRPA.
|}
|}


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If you have questions or run into trouble, please have a look at the [[Known issues|known issues]] and/or post a question on the [https://www.vasp.at/forum/ VASP Forum].
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[[The VASP Manual#toc|Back to the top]]

Revision as of 10:16, 14 April 2026

Featured topics

Category subtopics (amongst others)
We collect theory pages from all the different areas VASP offers functionalities. These can also be found in the corresponding category of the topic. For instance, the article on the Blocked-Davidson algorithm is also linked from the electronic minimization page.
The computational setup considers the installation, the input and output files, performance, etc. To learn how to set up your calculation, it is probably best to look for a how-to page, e.g., setting up an electronic minimization, band-structure calculation using hybrid functionals, constructing Wannier orbitals, structure optimization, etc.
Electronic minimization is the central task in many calculations. Here, you find pages describing the self-consistency cycle, different algorithms, e.g., blocked-Davidson algorithm, RMM-DIIS, direct optimization of the orbitals, and related topics like preconditioning, density mixing, etc.
Band structure, density of states, partial DOS and on-site charge and magnetization (LORBIT), electrostatics, charge density, potential, etc.
Spin-orbit coupling, noncollinear magnetism, spin spirals, constrained magnetism, etc.
LDA, GGA, meta-GGA, DFT+U, hybrid functionals, van der Waals functionals.
Crystal symmetry, reciprocal space, surfaces, pair-correlation function for liquids, etc.
Structure optimization, ionic-minimization methods, forces, transition states, etc.
Barostats, thermostats, ensembles, etc.
Monitoring geometric parameters, pair-correlation function, thermal conductivity, diffusion, etc.
Interface pinning, constrained molecular dynamics, metadynamics, thermodynamic integration, etc.
Training and application of force fields.
Lattice vibrations, finite differences, phonon dispersion relation.
Band-structure renormalization, transport, stochastic sampling.
Static and frequency-dependent dielectric properties, Berry phases, spectroscopy (UV, VIS, X-ray, NMR), phonons, etc.
ACFDT, BSE, GW, MP2, cRPA.
Obtaining Wannier functions, SCDM, partial DOS and on-site charge and magnetization (LORBIT), Constrained-random-phase approximation
Parallelization, memory management, profiling, etc.

Support

If you have questions or run into trouble, please have a look at the known issues and/or post a question on the VASP Forum.


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