Optical investigations of YbCrO3 under high magnetic fields. I. Yb3+ absorption spectra

Norimichi Kojima, Hiroaki Okada, Morihiro Kawarazaki, Iwao Mogi, Masayasu Takeda, Giyu Kido, Yasuaki Nakagawa, Kuniro Tsushima

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Optical absorption spectra corresponding to the 2F 7/22F5/2 transition of Yb3+ in YbCrO3 were investigated under high magnetic fields. The energy positions of these spectra remarkably changed at the metamagnetic transition where the weak ferromagnetic moment of the Cr3+ spins reverses its direction. From the analysis of the spectral change at the transition, the microscopic mechanism of the metamagnetic transition were elucidated. In the energy region of the 2F7/22F 5/2 transition of Yb3+, besides single-ion excitations, cooperative absorption spectra corresponding to the Yb3+ exciton coupled with Cr3+ magnon and the Yb3+ exciton coupled with Yb3+ spin-flip were observed. From the analysis of these cooperative absorption spectra, the behavior of the Cr3+ magnon mode and the Yb3+ spin-flip mode under high magnetic fields was investigated.

Original languageEnglish
Pages (from-to)3082-3089
Number of pages8
Journaljournal of the physical society of japan
Volume64
Issue number8
DOIs
Publication statusPublished - 1995 Aug

Keywords

  • 3d-4f exchange interaction
  • Cooperative excitation
  • Exciton
  • Magnon
  • Metamagnetic transition
  • YbCrO

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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