A key for photoinduced insulator-metal transitions in manganites: Lattice constant matching between charge/orbital ordered insulator and ferromagnetic metal

Masakazu Matsubara, Takeshi Ogasawara, Yasuhide Tomioka, Katsuhiro Tobe, Hiroshi Okamoto, Yoshinori Tokura

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We report comparative studies of photoinduced spin and charge dynamics in the three kinds of the charge/orbital ordered (CO/OO) manganites. By the irradiation of a femtosecond laser pulse, ultrafast ferromagnetism is induced in Gd 0:55Sr 0:45MnO 3 by the photocarrier-induced double exchange interaction, while delayed ferromagnetism occurs in Nd 0:5Sr 0:5MnO 3 through the thermalizations of the spin and lattice sectors with the charge sector. In Pr 0:55(Ca 0:8Sr 0:2) 0:45MnO 3, neither of the ultrafast nor delayed ferromagnetism was observed. Such differences between photoinduced magnetisms will be discussed in terms of the lattice-structural change between the CO/OO and ferromagnetic states.

本文言語English
論文番号023707
ジャーナルjournal of the physical society of japan
78
2
DOI
出版ステータスPublished - 2009 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「A key for photoinduced insulator-metal transitions in manganites: Lattice constant matching between charge/orbital ordered insulator and ferromagnetic metal」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