Stability of Staggered Flux State for Anisotropic Triangular Lattice

H. Yokoyama; S. Tamura; T. Watanabe; K. Kobayashi; M. Ogata

doi:10.1016/j.phpro.2014.09.004

Stability of Staggered Flux State for Anisotropic Triangular Lattice

H. Yokoyama, S. Tamura, T. Watanabe, K. Kobayashi, M. Ogata

SCI - Physics

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

In view of pseudogap-like behavior found in organic layered superconductors κ-(BEDT-TTF)₂X, we study the stability of correlated staggered flux state, which may bring about pseudogap behavior, with respect to the ordinary correlated Fermi sea as a low-lying normal state that underlies the unconventional superconductivity. To treat strong correlations, we apply a variational Monte Carlo method to a Hubbard model on a anisotropic triangular lattice, and construct a phase diagram of the normal state for large values of U/t. The results are qualitatively consistent with the features of non-doped κ-(BEDT-TTF)₂ salts.

Original language	English
Pages (from-to)	14-17
Number of pages	4
Journal	Physics Procedia
Volume	58
DOIs	https://doi.org/10.1016/j.phpro.2014.09.004
Publication status	Published - 2014
Event	26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan Duration: 2013 Nov 18 → 2013 Nov 20

Keywords

Hubbard model
anisotropic triangular lattice
frustration
pseudogap
staggered flux
variational Monte Carlo
κ-BEDT-TTF salt

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10.1016/j.phpro.2014.09.004

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title = "Stability of Staggered Flux State for Anisotropic Triangular Lattice",

abstract = "In view of pseudogap-like behavior found in organic layered superconductors κ-(BEDT-TTF)2X, we study the stability of correlated staggered flux state, which may bring about pseudogap behavior, with respect to the ordinary correlated Fermi sea as a low-lying normal state that underlies the unconventional superconductivity. To treat strong correlations, we apply a variational Monte Carlo method to a Hubbard model on a anisotropic triangular lattice, and construct a phase diagram of the normal state for large values of U/t. The results are qualitatively consistent with the features of non-doped κ-(BEDT-TTF)2 salts.",

keywords = "Hubbard model, anisotropic triangular lattice, frustration, pseudogap, staggered flux, variational Monte Carlo, κ-BEDT-TTF salt",

author = "H. Yokoyama and S. Tamura and T. Watanabe and K. Kobayashi and M. Ogata",

note = "Publisher Copyright: {\textcopyright} 2014 The Authors.; 26th International Symposium on Superconductivity, ISS 2013 ; Conference date: 18-11-2013 Through 20-11-2013",

year = "2014",

doi = "10.1016/j.phpro.2014.09.004",

language = "English",

volume = "58",

pages = "14--17",

journal = "Physics Procedia",

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TY - JOUR

T1 - Stability of Staggered Flux State for Anisotropic Triangular Lattice

AU - Yokoyama, H.

AU - Tamura, S.

AU - Watanabe, T.

AU - Kobayashi, K.

AU - Ogata, M.

PY - 2014

Y1 - 2014

N2 - In view of pseudogap-like behavior found in organic layered superconductors κ-(BEDT-TTF)2X, we study the stability of correlated staggered flux state, which may bring about pseudogap behavior, with respect to the ordinary correlated Fermi sea as a low-lying normal state that underlies the unconventional superconductivity. To treat strong correlations, we apply a variational Monte Carlo method to a Hubbard model on a anisotropic triangular lattice, and construct a phase diagram of the normal state for large values of U/t. The results are qualitatively consistent with the features of non-doped κ-(BEDT-TTF)2 salts.

AB - In view of pseudogap-like behavior found in organic layered superconductors κ-(BEDT-TTF)2X, we study the stability of correlated staggered flux state, which may bring about pseudogap behavior, with respect to the ordinary correlated Fermi sea as a low-lying normal state that underlies the unconventional superconductivity. To treat strong correlations, we apply a variational Monte Carlo method to a Hubbard model on a anisotropic triangular lattice, and construct a phase diagram of the normal state for large values of U/t. The results are qualitatively consistent with the features of non-doped κ-(BEDT-TTF)2 salts.

KW - Hubbard model

KW - anisotropic triangular lattice

KW - frustration

KW - pseudogap

KW - staggered flux

KW - variational Monte Carlo

KW - κ-BEDT-TTF salt

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U2 - 10.1016/j.phpro.2014.09.004

DO - 10.1016/j.phpro.2014.09.004

M3 - Conference article

AN - SCOPUS:84999710455

SN - 1875-3884

VL - 58

SP - 14

EP - 17

JO - Physics Procedia

JF - Physics Procedia

T2 - 26th International Symposium on Superconductivity, ISS 2013

Y2 - 18 November 2013 through 20 November 2013

ER -

Stability of Staggered Flux State for Anisotropic Triangular Lattice

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Keywords

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