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Phase Diagram of the Triangular Extended Hubbard Model

Tocchio, Luca Fausto
•
Gros C.
•
Zhang X. F.
•
Eggert S.
2014
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We study the extended Hubbard model on the triangular lattice as a function of filling and interaction strength. The complex interplay of kinetic frustration and strong interactions on the triangular lattice leads to exotic phases where long-range charge order, antiferromagnetic order, and metallic conductivity can coexist. Variational Monte Carlo simulations show that three kinds of ordered metallic states are stable as a function of nearest neighbor interaction and filling. The coexistence of conductivity and order is explained by a separation into two functional classes of particles: part of them contributes to the stable order, while the other part forms a partially filled band on the remaining substructure. The relation to charge ordering in charge transfer salts is discussed.
DOI
10.1103/PhysRevLett.113.246405
WOS
WOS:000346387400002
Archivio
http://hdl.handle.net/20.500.11767/32779
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84918521433
https://arxiv.org/abs/1402.3160
http://cdsads.u-strasbg.fr/abs/2014PhRvL.113x6405T
Diritti
metadata only access
Soggetti
  • Antiferromagnetism

  • Charge transfer

  • Hubbard model

  • Intelligent system

  • Antiferromagnetic ord...

  • Charge-transfer salt

  • Extended Hubbard mode...

  • Interaction strength

  • Metallic conductivity...

  • Nearest-neighbor inte...

  • Strong interaction

  • Variational Monte Car...

  • Monte Carlo methods

Web of Science© citazioni
27
Data di acquisizione
Mar 20, 2024
Visualizzazioni
2
Data di acquisizione
Apr 19, 2024
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