SIESTA (computer program): Difference between revisions

Revision as of 15:01, 5 March 2025

Revision as of 14:24, 19 April 2025

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* Besides the standard [[Rayleigh–Ritz method|Rayleigh-Ritz eigenstate method]], it allows the use of localized linear combinations of the occupied orbitals (valence-bond or Wannier-like functions), making the computer time and memory scale linearly with the number of atoms. Simulations with several hundred atoms are feasible with modest workstations.

* It is written in [[Fortran 95]] and memory is allocated dynamically.

* It may be compiled for serial or parallel execution (under MPI parallelization, OpenMP threading, and GPU offloading).

SIESTA routinely provides:

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* [[Electronic band structure|Band structure]].

* Ballistic electron transport under non-equilibrium (through TranSIESTA)

* Density functional Bogoliubov-de Gennes theory for superconductors

== Strengths of SIESTA ==