Magnetic transition in the Hubbard model on the triangular lattice

Takuya Yoshioka, Akihisa Koga, Norio Kawakami

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate a magnetic transition in the half-filled Hubbard model on the triangular lattice. By making use of the path-integral renormalization group (PIRG) method with a spin-rotated frame, we calculate the ground state energy and charge/spin correlation functions for a cluster with 36 sites. We find that as the Hubbard interaction is varied, a first-order magnetic phase transition occurs from a nonmagnetic insulating phase to a magnetically ordered phase with a 1203 spin configuration.

Original languageEnglish
Pages (from-to)S179-S181
JournalPhysica B: Condensed Matter
Volume405
Issue number11 SUPPL.
DOIs
Publication statusPublished - 2010 Jun 1
Externally publishedYes

Keywords

  • Geometrical frustration
  • Hubbard model
  • Triangular lattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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