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Single-site DFT

delete2024-07-31
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OA
AI
P
Peter Mlkvik *
M
Maximilian E. Merkel
N
Nicola A. Spaldin
C
Claude Ederer
DOI:10.1103/PhysRevResearch.6.033122delete
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Abstract

Abstract

En 中文
We present a combined density-functional theory and single-site dynamical mean-field theory (DMFT) study of vanadium dioxide (VO2) 2 ) using an unconventional set of bond-centered orbitals as the basis of the correlated subspace. VO2 2 is a prototypical material undergoing a metal-insulator transition (MIT), hosting both intriguing physical phenomena and the potential for industrial applications. With our choice of correlated subspace basis, we investigate the interplay of structural dimerization and electronic correlations in VO2 2 in a computationally cheaper way compared to other state-of-the-art methods, such as cluster DMFT. Our approach allows us to treat the rutile and M1 monoclinic VO2 2 phases on an equal footing and to vary the dimerizing distortion continuously, exploring the energetics of the transition between the two phases. The choice of basis presented in this work hence offers a complementary view on the long-standing discussion of the MIT in VO2 2 and suggests possible future extensions to other similar materials hosting molecular-orbital-like states.
Keywords:
METAL-INSULATOR-TRANSITION
MOTT-HUBBARD
VO2
PEIERLS
VIEW

Journal

Physical Review Research cover
Physical Review Research
IF:
4.2
Papers:
7.6K
Citations:
2.7W

Organization

S
swiss federal institutes of technology domain
Scholars:
9.0W
Papers: 8.0W
Citations: 163
Cited Papers

Cited Papers

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Resolving the VO2 controversy: Mott mechanism dominates the insulator-to-metal transition
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errNajera, O.; Civelli, M.; Dobrosavljevic, V.; Rozenberg, M. J.
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Orbital-selective Mott and Peierls transition in HxVO2
err2022-09-23
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errKim, Soyeun; Backes, Steffen; Yoon, Hyojin; Kim, Woojin; Sohn, Changhee; Son, Junwoo; Biermann, Silke; Noh, Tae Won; Park, Se Young
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QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
err2009-09-01
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errPaolo Giannozzi; Stefano Baroni; Nicola Bonini; Matteo Calandra; Roberto Car; Carlo Cavazzoni; Davide Ceresoli; Guido L Chiarotti; Matteo Cococcioni; Ismaila Dabo; Andrea Dal Corso; Stefano de Gironcoli; Stefano Fabris; Guido Fratesi; Ralph Gebauer; Uwe Gerstmann; Christos Gougoussis; Anton Kokalj; Michele Lazzeri; Layla Martin-Samos; Nicola Marzari; Francesco Mauri; Riccardo Mazzarello; Stefano Paolini; Alfredo Pasquarello; Lorenzo Paulatto; Carlo Sbraccia; Sandro Scandolo; Gabriele Sclauzero; Ari P Seitsonen; Alexander Smogunov; Paolo Umari; Renata M Wentzcovitch
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An updated version of wannier90: A tool for obtaining maximally-localised Wannier functions
err2014-08-01
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errMostofi, Arash A.; Yates, Jonathan R.; Pizzi, Giovanni; Lee, Young-Su; Souza, Ivo; Vanderbilt, David; Marzari, Nicola
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