Photonic phase control of magnetic oxides

Y. Okimoto, Y. Tokura, Y. Tomioka, Y. Onose, Y. Otsuka, K. Miyano

Research output: Contribution to journalConference article

Abstract

Unconventional optical responses have been revealed for the perovskite manganese oxide, Pr1-xCaxMnO3, which is known to undergo the insulator-metal (I-M) transition relevant to the magnetic field induced melting of the charge-ordered (CO) state. Optical conductivity spectrum is drastically modified over 0-1 eV from a gap-like feature into a metallic band with application of magnetic field of 7 T. It was found that such an I-M transition can be caused by photo-excitation as well. The electrical conductivity and magnetization increase abruptly with irradiation of visible/IR laser, indicating the photo-melting of the CO state and the photo-generation of ferromagnetic metallic domains.

Original languageEnglish
Pages (from-to)559-570
Number of pages12
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume314
Publication statusPublished - 1998 Dec 1
Externally publishedYes
EventProceedings of the 1998 TAPPI Metered Size Press Forum - New Orleans, LA, USA
Duration: 1998 Apr 301998 May 2

Keywords

  • Charge ordering
  • Ferromagnetic metal
  • Optical conductivity
  • Photo induced insulator-metal transition

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Photonic phase control of magnetic oxides'. Together they form a unique fingerprint.

  • Cite this