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Title: On the Extended Holstein–Hubbard Model for Epitaxial Graphene on Metal

Abstract

A model that combines the extended Hubbard model involving intra-atomic and interatomic Coulomb repulsion and the Holstein model describing the interaction of a band electron with an Einstein phonon is proposed. Three regions of the phase diagram are considered. The regions correspond to the states of spin- and charge-density waves and the state uniform in spin and charge. Numerical estimations for the Rh, Ir, and Pt substrates show that Coulomb interaction plays a leading part, making possible transitions from the uniform state to the states of spin- and charge-density waves.

Authors:
 [1]
  1. Ioffe Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22756203
Resource Type:
Journal Article
Journal Name:
Semiconductors
Additional Journal Information:
Journal Volume: 52; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7826
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; CHARGE DENSITY; COULOMB FIELD; GRAPHENE; HUBBARD MODEL; PHASE DIAGRAMS; PLATINUM

Citation Formats

Davydov, S. Yu., E-mail: Sergei-Davydov@mail.ru. On the Extended Holstein–Hubbard Model for Epitaxial Graphene on Metal. United States: N. p., 2018. Web. doi:10.1134/S1063782618020033.
Davydov, S. Yu., E-mail: Sergei-Davydov@mail.ru. On the Extended Holstein–Hubbard Model for Epitaxial Graphene on Metal. United States. doi:10.1134/S1063782618020033.
Davydov, S. Yu., E-mail: Sergei-Davydov@mail.ru. Thu . "On the Extended Holstein–Hubbard Model for Epitaxial Graphene on Metal". United States. doi:10.1134/S1063782618020033.
@article{osti_22756203,
title = {On the Extended Holstein–Hubbard Model for Epitaxial Graphene on Metal},
author = {Davydov, S. Yu., E-mail: Sergei-Davydov@mail.ru},
abstractNote = {A model that combines the extended Hubbard model involving intra-atomic and interatomic Coulomb repulsion and the Holstein model describing the interaction of a band electron with an Einstein phonon is proposed. Three regions of the phase diagram are considered. The regions correspond to the states of spin- and charge-density waves and the state uniform in spin and charge. Numerical estimations for the Rh, Ir, and Pt substrates show that Coulomb interaction plays a leading part, making possible transitions from the uniform state to the states of spin- and charge-density waves.},
doi = {10.1134/S1063782618020033},
journal = {Semiconductors},
issn = {1063-7826},
number = 2,
volume = 52,
place = {United States},
year = {2018},
month = {2}
}