Variational Monte Carlo study for the insulating mechanism of Sr 2IrO4: From the viewpoint of energy gain

Hiroshi Watanabe, Tomonori Shirakawa, Seiji Yunoki

研究成果: Article査読

抄録

To examine the insulating mechanism of a novel 5d-electron system Sr 2IrO4, we study the ground state properties of a three-orbital Hubbard model using a variational Monte Carlo method. We find that the insulating state in the ground state phase diagram shows crossover behavior from a weakly-correlated to a strongly-correlated antiferromagnetic state. This crossover is characterized by the different mechanisms of the insulating state, i.e., changing from an interaction-energy driven insulator to a band-energy driven insulator with increasing the interaction. We discuss that Sr 2IrO4 is located around this crossover region and displays an anomalous behavior.

本文言語English
論文番号012047
ジャーナルJournal of Physics: Conference Series
454
1
DOI
出版ステータスPublished - 2013
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Variational Monte Carlo study for the insulating mechanism of Sr <sub>2</sub>IrO<sub>4</sub>: From the viewpoint of energy gain」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル