The SIESTA method for ab initio order-N materials simulation
José M. Soler,Emilio Artacho,Julian D. Gale,Alberto García,Javier Junquera,Javier Junquera,Pablo Ordejón,Daniel Sánchez-Portal +7 more
TLDR
In this paper, a selfconsistent density functional method using standard norm-conserving pseudopotentials and a flexible, numerical linear combination of atomic orbitals basis set, which includes multiple-zeta and polarization orbitals, was developed and implemented.Abstract:
We have developed and implemented a selfconsistent density functional method using standard norm-conserving pseudopotentials and a flexible, numerical linear combination of atomic orbitals basis set, which includes multiple-zeta and polarization orbitals. Exchange and correlation are treated with the local spin density or generalized gradient approximations. The basis functions and the electron density are projected on a real-space grid, in order to calculate the Hartree and exchange-correlation potentials and matrix elements, with a number of operations that scales linearly with the size of the system. We use a modified energy functional, whose minimization produces orthogonal wavefunctions and the same energy and density as the Kohn-Sham energy functional, without the need for an explicit orthogonalization. Additionally, using localized Wannier-like electron wavefunctions allows the computation time and memory required to minimize the energy to also scale linearly with the size of the system. Forces and stresses are also calculated efficiently and accurately, thus allowing structural relaxation and molecular dynamics simulations.read more
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Half-metallic graphene nanoribbons
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Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems
Andrea C. Ferrari,Francesco Bonaccorso,Francesco Bonaccorso,Vladimir I. Fal'ko,Konstantin S. Novoselov,Stephan Roche,Peter Bøggild,Stefano Borini,Frank H. L. Koppens,Vincenzo Palermo,Nicola M. Pugno,Nicola M. Pugno,Nicola M. Pugno,Jose A. Garrido,Roman Sordan,Alberto Bianco,Laura Ballerini,Maurizio Prato,Elefterios Lidorikis,Jani Kivioja,Claudio Marinelli,Tapani Ryhänen,Alberto F. Morpurgo,Jonathan N. Coleman,Valeria Nicolosi,Luigi Colombo,Albert Fert,Albert Fert,Mar García-Hernández,Adrian Bachtold,Grégory F. Schneider,Francisco Guinea,Cees Dekker,Matteo Barbone,Zhipei Sun,Costas Galiotis,Alexander N. Grigorenko,Gerasimos Konstantatos,Andras Kis,Mikhail I. Katsnelson,Lieven M. K. Vandersypen,A. Loiseau,Vittorio Morandi,Daniel Neumaier,Emanuele Treossi,Vittorio Pellegrini,Vittorio Pellegrini,Marco Polini,Alessandro Tredicucci,Gareth M. Williams,Byung Hee Hong,Jong Hyun Ahn,Jong Min Kim,Herbert Zirath,Bart J. van Wees,Herre S. J. van der Zant,Luigi Occhipinti,Andrea di Matteo,Ian A. Kinloch,Thomas Seyller,Etienne Quesnel,Xinliang Feng,K.B.K. Teo,Nalin Rupesinghe,Pertti Hakonen,Simon R. T. Neil,Quentin Tannock,Tomas Löfwander,Jari M. Kinaret +68 more
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Ab-initio simulations of materials using VASP: Density-functional theory and beyond.
TL;DR: The implementation of various DFT functionals and many‐body techniques within highly efficient, stable, and versatile computer codes, which allow to exploit the potential of modern computer architectures are discussed.
Journal ArticleDOI
The Atomic Simulation Environment - A Python library for working with atoms
Ask Hjorth Larsen,Ask Hjorth Larsen,Jens Jørgen Mortensen,Jakob Blomqvist,Ivano E. Castelli,Rune Christensen,Marcin Dulak,Jesper Friis,Michael N. Groves,Bjørk Hammer,Cory Hargus,Eric D. Hermes,Paul C. Jennings,Peter Bjerre Jensen,James R. Kermode,John R. Kitchin,Esben L. Kolsbjerg,Joseph Kubal,Kristen Kaasbjerg,Steen Lysgaard,Jon Bergmann Maronsson,Tristan Maxson,Thomas Olsen,Lars Pastewka,Andrew A. Peterson,Carsten Rostgaard,Jakob Schiøtz,Ole Schütt,Mikkel Strange,Kristian Sommer Thygesen,Tejs Vegge,Lasse B. Vilhelmsen,Michael Walter,Zhenhua Zeng,Karsten Wedel Jacobsen +34 more
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Ab Initio Molecular Simulations with Numeric Atom-Centered Orbitals
Volker Blum,Ralf Gehrke,Felix Hanke,Paula Havu,Ville Havu,Xinguo Ren,Karsten Reuter,Matthias Scheffler +7 more
TL;DR: The construction of transferable, hierarchical basis sets are demonstrated, allowing the calculation to range from qualitative tight-binding like accuracy to meV-level total energy convergence with the basis set, since all basis functions are strictly localized.
References
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Self-consistent first-principles technique with linear scaling.
TL;DR: An algorithm for first-principles electronic structure calculations having a computational cost which scales linearly with the system size is presented, and it is related to the technique of Li, Nunes and Vanderbilt.
Journal ArticleDOI
Designed nonlocal pseudopotentials for enhanced transferability
TL;DR: In this paper, a pseudopotential generation method is presented which exploits flexibility contained in the separable Kleinman-Bylander form of the nonlocal pseudo-potential.
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Relativistic norm-conserving pseudopotential
TL;DR: In this article, a new pseudopotential introduced by Hamann, Schluter, and Chiang can be extended to include all relativistic corrections to order ε = ε √ √ Z √ ε 2 (not ε −Z √ � 2 ).
Designed nonlocal pseudopotentials for enhanced transferability
TL;DR: In this article, a pseudopotential generation method is presented which exploits flexibility contained in the separable Kleinman-Bylander form of the nonlocal pseudo-potential.
Journal ArticleDOI
Spontaneous polarization as a Berry phase of the Hartree-Fock wave function: The case of KNbO 3
TL;DR: In this article, the ferroelectric polarization of perovskite oxide was investigated under the self-consistent Hartree-Fock (HF) method, where the crystalline orbitals are expanded over a set of localized functions.