ESR investigation on the breather mode and the spinon-breather dynamical crossover in Cu benzoate

T. Asano, H. Nojiri, Y. Inagaki, J. P. Boucher, T. Sakon, Y. Ajiro, M. Motokawa

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

Using electron spin resonance (ESR), a well-defined breather excitation was observed in a very wide-field range for Cu benzoate exposed to a staggered field. The field dependence of the energy gap showed good agreement with the results of previously reported specific-heat measurements. Overall, the results establish the validity of the mass formula of the uniform first-breather mode at q = 0 in a wide-field range for a quantum SG system.

Original languageEnglish
Pages (from-to)5880-5883
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number25
DOIs
Publication statusPublished - Dec 3 2000

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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