The VASP Manual: Difference between revisions

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== About this manual ==
{| cellpadding="5" cellspacing="15" style="width: 100%; border-spacing: 15px;"
 
| style="background: #F8F4FB;"| [[Welcome|Take a tour]] || style="background: #F8F4FB;"|[[Installing VASP.6.X.X|Install VASP]] || style="background: #F8F4FB;"| [https://www.vasp.at/sign_in/registration_form/ Get a license]
Absolute beginners should read the [[The VASP Manual#Getting started|Getting started]] section and preferably work through the VASP workshop material that can be found in that particular section.
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|style="background: #FCF3F4;"| [[Changelog|Release notes]] ||style="background: #FCF3F4;"| [https://www.vasp.at VASP website and news] ||style="background: #FCF3F4;"| [https://www.vasp.at/forum/ Forum]
The [[The VASP Manual#Howto's|Howto's]] can be viewed as sort of a FAQ list of questions "How do I perform ... calculations with VASP".
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|style="background: #F3FCFB;"| [https://www.vasp.at/learn/ Learn], [[:Category:Examples|examples]], [[:Category:Tutorials|Wiki tutorials]] ||style="background: #F3FCFB;"| [https://www.vasp.at/py4vasp/latest py4vasp] ||style="background: #F3FCFB;"| [https://www.vasp.at/sign_in/portal Portal]
Users looking for information on particular input parameters/files should follow the links in the [[The VASP Manual#Input|Input]] section, or directly go to:
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[[:Category:INCAR|The list of '''INCAR''' tags and related articles]].
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== Featured topics ==
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{| style="width: 100%" class="sortable wikitable"
[[The VASP Manual#toc|Back to the top]]
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! scope="col" style="padding:5px; border-style: solid; border-width: 15px; border-color: white" | '''Category''' 
== Getting started ==
! scope="col" class="unsortable" style="padding:5px; border-style: solid; border-width: 15px; border-color: white" | ''subtopics (amongst others)''
 
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This section should contain links to pages that deal with installation of VASP, and some getting started examples.
|style="background: #F8F4FB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Theory| Theoretical background]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Density-functional theory, [[pseudopotentials]], [[projector-augmented-wave formalism]],  [[phonons]], [[Machine_learning_force_field:_Theory |machine learning force fields]], [[Hybrid functionals: formalism|hybrid functionals]], GW approximation, etc.
 
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=== Installation and validation ===
|style="background: #F8F4FB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Calculation setup| Calculation setup]] || style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white" | [[:Category:Installation|Installation]], [[:Category:Input files|input files]], [[:Category:Output Files|output files]], [[:Category:INCAR tag|INCAR tags]], [[:Category:Howto|How to's]], etc.
 
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=== The VASP workshop ===
|style="background: #FCF3F4; padding:5px; border-style: solid; border-width: 15px; border-color: white"|[[:Category:Electronic minimization| Electronic minimization]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[Self-consistency cycle]], [[blocked-Davidson algorithm]], [[RMM-DIIS]], [[direct optimization of the orbitals]], [[preconditioning]], [[density mixing]], etc.
In 2003 we organized a VASP workshop in Vienna. The [[VASP_workshop_2003|lecture notes and examples from the handson sessions]] are highly recommended as place to start if you are a beginner and might also be useful if you are not.
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|style="background: #FCF3F4; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Electronic ground-state properties| Electronic ground-state properties]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[: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]], etc.
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[[The VASP Manual#toc|Back to the top]]
|style="background: #FCF3F4; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Magnetism| Spin degree of freedom]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Spin-orbit coupling, noncollinear magnetism, spin spirals, constrained magnetism, etc.
 
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== Howto's ==
|style="background: #FCF3F4; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Exchange-correlation functionals|Exchange-correlation functionals]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:GGA|LDA]], [[:Category:GGA|GGA]], [[:Category:meta-GGA|meta-GGA]], [[:Category:DFT+U|DFT+U]], [[:Category:Hybrid functionals|hybrid functionals]], [[:Category:van_der_Waals_functionals|van der Waals functionals]].
 
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Below you will find links to pages that present clearcut procedures describing how to do specific calculations:
|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Symmetry| Symmetry and structure]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Crystal symmetry, reciprocal space, surfaces, pair-correlation function for liquids, etc.
*[[GW calculations]]
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|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Ionic minimization| Ionic mimimization]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Structure optimization, ionic-mimimization methods, [[:Category:Forces|forces]], [[:Category:Transition States|transition states]], etc.
[[The VASP Manual#toc|Back to the top]]
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|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Molecular dynamics| Molecular dynamics]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Barostats, [[:Category:Thermostats|thermostats]], [[:Category:Ensembles|ensembles]], etc.
== Input ==
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|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Ensemble properties| Ensemble properties]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Monitoring geometric parameters, pair-correlation function, thermal conductivity, diffusion, etc.
As a minimal setup, VASP requires the user to prepare the following input files:
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|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Advanced molecular-dynamics sampling| Advanced molecular-dynamics sampling]] ||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Interface pinning|Interface pinning]], constrained molecular dynamics, metadynamics, thermodynamic integration, etc.
{{FILE|INCAR}}, {{FILE|KPOINTS}}, {{FILE|POSCAR}}, and {{FILE|POTCAR}}.
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|style="background: #F3FCFB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Machine-learned force fields| Machine-learned force fields]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Training and application of force fields. 
If present (in the directory were the calculation runs) the following [[The VASP Manual#Output|output files]] of previous runs may be read as restart information:
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|style="background: #F0F4FF; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Phonons| Phonons]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Lattice vibrations, [[:Category:Electron-phonon_interactions | electron-phonon interactions]].
{{FILE|CHGCAR}} and/or {{FILE|WAVECAR}}.
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|style="background: #F0F4FF; padding:5px; border-style: solid; border-width: 15px; border-color: white"|  [[:Category:Linear response| Response theory]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Static and frequency-dependent [[:Category:Dielectric properties|dielectric properties]], Berry phases, spectroscopy (UV, VIS, X-ray), [[:Category:Phonons|phonons]], etc.
Some specific features of VASP require additional [[The VASP Manual#Output|output files]] from previous runs to be present:
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|style="background: #F0F4FF; padding:5px; border-style: solid; border-width: 15px; border-color: white"|  [[:Category:Many-body perturbation theory| Many-body perturbation theory]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| ACFDT, BSE, GW, MP2, CRPA.
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[[The VASP Manual#toc|Back to the top]]
<!--| [[:Category:Defects| Defects and doping]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Dipole corrections for defects in solids, VCA, etc.
 
|- -->
== Output ==
<!-- | [[:Category:Core states| Core states]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Frozen-core approximation, X-ray abpsorption spectra (SCH calculations), ICORELEVEL, etc.
 
|- -->
The main output file of VASP is the {{FILE|OUTCAR}} file.
|style="background: #FCF3F4; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Wannier functions| Localized basis and projection]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| Obtaining [[Wannier functions]], SCDM, partial DOS and on-site charge and magnetization ({{TAG|LORBIT}}), [[Constrained-random-phase approximation]]
 
The {{FILE|OSZICAR}} file ...
 
:{| cellpadding="5" cellspacing="15"
| {{FILE|CHGCAR}} || {{FILE|WAVECAR}} || {{FILE|CHG}} || {{FILE|WAVEDER}}
|-
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| {{FILE|CONTCAR}} || {{FILE|XDATCAR}} || {{FILE|EIGENVAL}} || {{FILE|IBZKPT}}
|style="background: #F8F4FB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Performance| Performance]]||style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:Parallelization| Parallelization]], [[:Category:Memory|memory management]], profiling, etc.
<!---
|-
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|{{FILE|DOSCAR}} || {{FILE|PROCAR}} || {{FILE|PROOUT}} || {{FILE|PCDAT}}
|style="background: #F8F4FB; padding:5px; border-style: solid; border-width: 15px; border-color: white"| [[:Category:VASP6|Outlook]]|| style="background: white; padding:5px; border-style: solid; border-width: 15px; border-color: white"|Features that will only be available in VASP.6.X.
|-
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| {{FILE|vasprun.xml}} ||  ||  ||
--->
|}
|}
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[[The VASP Manual#toc|Back to the top]]
== Visualisation and Postprocessing ==
Here we can link to postprocessing programs and script, visualization tools, etc etc.
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[[The VASP Manual#toc|Back to the top]]
== Further reading and additional documentation ==


Here should place links to lectures and presentations and articles that concern VASP.
== Support ==
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].
{{NB|mind|We offer support on a courtesy basis only, not as a contractual service.}}


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[[The VASP Manual#toc|Back to the top]]
[[The VASP Manual#toc|Back to the top]]

Revision as of 13:21, 19 March 2024

Take a tour Install VASP Get a license
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Featured topics

Category subtopics (amongst others)
Theoretical background Density-functional theory, pseudopotentials, projector-augmented-wave formalism, phonons, machine learning force fields, hybrid functionals, GW approximation, etc.
Calculation setup Installation, input files, output files, INCAR tags, How to's, etc.
Electronic minimization Self-consistency cycle, blocked-Davidson algorithm, RMM-DIIS, direct optimization of the orbitals, preconditioning, density mixing, etc.
Electronic ground-state properties Band structure, density of states, partial DOS and on-site charge and magnetization (LORBIT), electrostatics, etc.
Spin degree of freedom Spin-orbit coupling, noncollinear magnetism, spin spirals, constrained magnetism, etc.
Exchange-correlation functionals LDA, GGA, meta-GGA, DFT+U, hybrid functionals, van der Waals functionals.
Symmetry and structure Crystal symmetry, reciprocal space, surfaces, pair-correlation function for liquids, etc.
Ionic mimimization Structure optimization, ionic-mimimization methods, forces, transition states, etc.
Molecular dynamics Barostats, thermostats, ensembles, etc.
Ensemble properties Monitoring geometric parameters, pair-correlation function, thermal conductivity, diffusion, etc.
Advanced molecular-dynamics sampling Interface pinning, constrained molecular dynamics, metadynamics, thermodynamic integration, etc.
Machine-learned force fields Training and application of force fields.
Phonons Lattice vibrations, electron-phonon interactions.
Response theory Static and frequency-dependent dielectric properties, Berry phases, spectroscopy (UV, VIS, X-ray), phonons, etc.
Many-body perturbation theory ACFDT, BSE, GW, MP2, CRPA.
Localized basis and projection Obtaining Wannier functions, SCDM, partial DOS and on-site charge and magnetization (LORBIT), Constrained-random-phase approximation
Performance 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.

Mind: We offer support on a courtesy basis only, not as a contractual service.

Back to the top

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