Synchrotron X-ray diffraction studies of the incommensurate phase of a spin-Peierls system CuGeO3 in strong magnetic fields

  • Yasuo Narumi
  • , Koichi Katsumata
  • , Yoshikazu Tabata
  • , Shojiro Kimura
  • , Yoshikazu Tanaka
  • , Tetsuya Nakamura
  • , Susumu Shimomura
  • , Masaaki Matsuda
  • , Isao Harada
  • , Yoshihiro Nishiyama
  • , Tetsuya Ishikawa
  • , Hideo Kitamura
  • , Toru Hara
  • , Takashi Tanaka
  • , Kenji Tamasaku
  • , Makina Yabashi
  • , Shunji Goto
  • , Haruhiko Ohashi
  • , Kunikazu Takeshita
  • , Toru Ohata
  • Tomohiro Matsushita, Teruhiko Bizen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Synchrotron X-ray diffraction measurements on a spin-Peierls material CuGeO3 in applied magnetic fields, H, up to 15 T are made. We find that the temperature, T, dependence of the incommensurate Bragg peak at a lower H is quite different from that at a higher H. At sufficiently high fields, we find that the lattice incommensurability, δ1, is almost independent of T, while at H slightly above the critical field = 12.25 T for the commensurate to incommensurate transition, δ1 decreases with increasing T. We interpret that this finding is due to a stabilization of the incommensurate state by a strong magnetic field which suppresses thermal fluctuations.

Original languageEnglish
Pages (from-to)2650-2653
Number of pages4
JournalJournal of the Physical Society of Japan
Volume73
Issue number10
DOIs
StatePublished - Oct 2004
Externally publishedYes

Keywords

  • CuGeO
  • High magnetic field
  • Incommensurate phase
  • Spin-Peierls compound
  • Synchrotron X-ray diffraction

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