Ultrafast melting of charge ordering in LuFe 2O 4 probed by terahertz spectroscopy

H. Itoh, K. Itoh, K. Anjyo, H. Nakaya, H. Akahama, D. Ohishi, S. Saito, Takashi Kambe, S. Ishihara, Naoshi Ikeda, S. Iwai

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Abstract

Ultrafast terahertz response of charge ordering (CO) in LuFe 2O 4 was investigated by near-infrared-pump (1.55 eV) and terahertz-probe (2-9 meV) spectroscopy. Photoinduced absorption observed immediately (1 ps) after the photoexcitation was attributed to photoinduced melting of the CO. The charge dynamics thereafter can be characterized by subsequent development of the photoinduced conductivity in the low-energy region (2-3 meV), implying the formation of a metallic state.

Original languageEnglish
Pages (from-to)149-151
Number of pages3
JournalJournal of Luminescence
Volume133
DOIs
Publication statusPublished - Jan 2013

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Keywords

  • Charge ordering
  • Iron oxide
  • Terahertz spectroscopy
  • Ultrafast spectroscopoy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Chemistry(all)
  • Biochemistry
  • Biophysics

Cite this

Itoh, H., Itoh, K., Anjyo, K., Nakaya, H., Akahama, H., Ohishi, D., Saito, S., Kambe, T., Ishihara, S., Ikeda, N., & Iwai, S. (2013). Ultrafast melting of charge ordering in LuFe 2O 4 probed by terahertz spectroscopy. Journal of Luminescence, 133, 149-151. https://doi.org/10.1016/j.jlumin.2011.12.051