Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice

K. Penc, Matthieu Mambrini, P. Fazekas, Frédéric Mila

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Motivated by the absence of a cooperative Jahn-Teller effect in LiNiO 2 and BaVS3, two layered oxides with triangular planes, we study the SU(4) symmetric spin-orbital model on the triangular lattice. Upon reducing the next-nearest-neighbor coupling, we show that the system undergoes a quantum phase transition to a liquid phase. A variational approach to this liquid phase shows that simple types of long-range correlations are suppressed, suggesting that it is stable against lattice distortions.

Original languageEnglish
Article number012408
Pages (from-to)124081-124084
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number1
Publication statusPublished - Jul 2003

Fingerprint

Crystal lattices
liquid phases
Phase transitions
Jahn-Teller effect
orbitals
Liquids
Oxides
oxides

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice. / Penc, K.; Mambrini, Matthieu; Fazekas, P.; Mila, Frédéric.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 1, 012408, 07.2003, p. 124081-124084.

Research output: Contribution to journalArticle

@article{ae8e48890a0d4de3940a43f8b1d02d82,
title = "Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice",
abstract = "Motivated by the absence of a cooperative Jahn-Teller effect in LiNiO 2 and BaVS3, two layered oxides with triangular planes, we study the SU(4) symmetric spin-orbital model on the triangular lattice. Upon reducing the next-nearest-neighbor coupling, we show that the system undergoes a quantum phase transition to a liquid phase. A variational approach to this liquid phase shows that simple types of long-range correlations are suppressed, suggesting that it is stable against lattice distortions.",
author = "K. Penc and Matthieu Mambrini and P. Fazekas and Fr{\'e}d{\'e}ric Mila",
year = "2003",
month = "7",
language = "English",
volume = "68",
pages = "124081--124084",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice

AU - Penc, K.

AU - Mambrini, Matthieu

AU - Fazekas, P.

AU - Mila, Frédéric

PY - 2003/7

Y1 - 2003/7

N2 - Motivated by the absence of a cooperative Jahn-Teller effect in LiNiO 2 and BaVS3, two layered oxides with triangular planes, we study the SU(4) symmetric spin-orbital model on the triangular lattice. Upon reducing the next-nearest-neighbor coupling, we show that the system undergoes a quantum phase transition to a liquid phase. A variational approach to this liquid phase shows that simple types of long-range correlations are suppressed, suggesting that it is stable against lattice distortions.

AB - Motivated by the absence of a cooperative Jahn-Teller effect in LiNiO 2 and BaVS3, two layered oxides with triangular planes, we study the SU(4) symmetric spin-orbital model on the triangular lattice. Upon reducing the next-nearest-neighbor coupling, we show that the system undergoes a quantum phase transition to a liquid phase. A variational approach to this liquid phase shows that simple types of long-range correlations are suppressed, suggesting that it is stable against lattice distortions.

UR - http://www.scopus.com/inward/record.url?scp=0141763872&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141763872&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0141763872

VL - 68

SP - 124081

EP - 124084

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 1

M1 - 012408

ER -