Recent high field ESR studies of low-dimensional quantum spin systems in Kobe

Hitoshi Ohta, Susumu Okubo, Yuji Inagaki, Zenji Hiroi, Hikomitsu Kikuchi

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

Recent advances in the high-field ESR studies of low-dimensional quantum spin systems in Kobe are presented. Among many systems studied, the results of S = 1/2 quasi-one-dimensional (1D) antiferromagnet BaCu2(Si 1-xGex)2O7 with the staggered field and S = 1/2 diamond chain system Cu3OH2(CO 3)2 are discussed. As the interchain interaction is almost canceled in the BaCu2(Si1-xGex) 2O7 (x = 0.65) system, we have found that the field and temperature dependences of the linewidth and the resonance field obey the Oshikawa-Affleck (OA) ESR theory of 1D antiferromagnet. The effect of the interchain interaction from the x dependence measurement and the existence of the breather mode at low temperature are also discussed. On the other hand, the high-field ESR measurements at 1.8 K revealed the direct transition in Cu 3OH2(CO3)2. The direct transition turned out to be anisotropic and it will be discussed in connection with the 1/3 magnetization plateau which is also anisotropic.

Original languageEnglish
Pages (from-to)38-44
Number of pages7
JournalPhysica B: Condensed Matter
Volume346-347
Issue number1-4
DOIs
Publication statusPublished - Apr 30 2004
Externally publishedYes
EventProceedings of the 7th International Symposium on Research - Toulouse, France
Duration: Jul 20 2003Jul 23 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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