ESR of quantum spin chains with staggered fields

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

Research output: Contribution to journalArticlepeer-review


We study electron spin resonance (ESR) of S = 1/2 antiferromagnetic Heisenberg chain systems, Cu-benzoate and Cu-pyrimidine, with staggered fields caused by alternating g-tensor and Dzyaloshinskii-Moriya interaction. We observe clearly the effect of the staggered fields on the shift and the linewidth of ESR spectra. Especially, in Cu-benzoate, we reveal the field-induced gap and the quantum critical behavior as a dynamical crossover.

Original languageEnglish
Pages (from-to)e685-e686
JournalJournal of Magnetism and Magnetic Materials
Issue numberSUPPL. 1
Publication statusPublished - 2004 May


  • Dzyaloshinskii-Moriya interaction
  • ESR
  • Quantum spin chain
  • Staggered field


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