Novel excitation-density dependence in strongly spin-charge coupled system

J. Ohara, Y. Kanamori, S. Ishihara

研究成果: Article査読

抄録

Photoinduced spin-charge dynamics in strongly correlated electron systems is studied based on an extended double-exchange model. Solving a time-dependent Schrödinger equation with the Lanczos method, we trace the process of photoinduced melting of an antiferromagnetic charge order and analyze the excitation-density dependence on that. In the case of low density photoexcitation, both charge and spin orders are melted by photocarrier doping. This is interpreted with a conventional double-exchange mechanism. In the case of high density photoexcitation, however, the charge order is melted. The antiferromagnetic spin order is transiently weakened but after turnoff of the photoirradiation it recovers. This phenomenon strikingly differs from the weak photoexcitation case.

本文言語English
ページ(範囲)355-358
ページ数4
ジャーナルActa Physica Polonica A
121
2
DOI
出版ステータスPublished - 2012 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Novel excitation-density dependence in strongly spin-charge coupled system」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