Ultrafast Photoinduced Formation of Metallic State in a Perovskite-type Manganite with Short Range Charge and Orbital Order

• Okimoto Yoichi

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST)

• Matsuzaki Hiroyuki

  Department of Advanced Materials Science, University of Tokyo

• Tomioka Yasuhide

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST)

• Kezsmarki Istvan

  Department of Applied Physics, University of Tokyo

• Ogasawara Takeshi

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST)

• Matsubara Masakazu

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST)

• Okamoto Hiroshi

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Advanced Materials Science, University of Tokyo

• Tokura Yoshinori

  Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Applied Physics, University of Tokyo

Abstract

Femtosecond reflection spectroscopy was performed on a perovskite-type manganite, Gd_0.55Sr_0.45MnO₃, with the short-range charge and orbital order (CO/OO). Immediately after the photoirradiation, a large increase of the reflectivity was detected in the mid-infrared region. The optical conductivity spectrum under photoirradiation obtained from the Kramers–Kronig analyses of the reflectivity changes demonstrates a formation of a metallic state. This suggests that ferromagnetic spin arrangements occur within the time resolution (∼200 fs) through the double exchange interaction, resulting in an ultrafast CO/OO to FM switching.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 76 (4), 043702-043702, 2007

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• photoinduced phase transition
• perovskite-type manganite
• ultrafast phenomena
• optical conductivity

Details

• CRID: 1390282679170734080
• NII Article ID: 130005296742
• NII Article ID: 110006278027
• NII Article ID: 210000106614
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.76.043702
• BIBCODE: 2007JPSJ...76d3702O
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 8705779
• Web Site: http://id.ndl.go.jp/bib/8705779
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8705779
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.76.043702
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed