Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex) 2O7 (x = 0.65)

H. Ohta, S. Okubo, D. Fukuoka, Y. Inagaki, T. Kunimoto, M. Kimata, K. Koyama, M. Motokawa, Z. Hiroi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We have performed the high-field ESR of the one-dimensional BaCu 2(Si1-xGex)2O7 (x = 0.65) antiferromagnet at 0.5 and 1.8 K in the wider frequency and magnetic field region (40-500 GHz, up to 30 T), and found the breather excitation predicted by the Oshikawa-Affleck (OA) theory. The observed field-induced gap for B||c (chain direction) shows the B2/3 dependence suggested by the OA theory, and the dependence is weak for the other directions which is consistent with the anisotropy of the Dzyaloshinsky-Moriya interaction. The results will be also discussed in connection with the breather excitation observed in Cu-benzoate.

Original languageEnglish
Pages (from-to)929-930
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
DOIs
Publication statusPublished - May 1 2004
Externally publishedYes
EventProceedings of the International Conference on Magnetism - Rome, Italy
Duration: Jul 27 2003Aug 1 2003

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Paramagnetic resonance
Anisotropy
Magnetic fields
Benzoates
excitation
anisotropy
magnetic fields
interactions
Direction compound

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex) 2O7 (x = 0.65). / Ohta, H.; Okubo, S.; Fukuoka, D.; Inagaki, Y.; Kunimoto, T.; Kimata, M.; Koyama, K.; Motokawa, M.; Hiroi, Z.

In: Journal of Magnetism and Magnetic Materials, Vol. 272-276, 01.05.2004, p. 929-930.

Research output: Contribution to journalConference article

Ohta, H. ; Okubo, S. ; Fukuoka, D. ; Inagaki, Y. ; Kunimoto, T. ; Kimata, M. ; Koyama, K. ; Motokawa, M. ; Hiroi, Z. / Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex) 2O7 (x = 0.65). In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 272-276. pp. 929-930.
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abstract = "We have performed the high-field ESR of the one-dimensional BaCu 2(Si1-xGex)2O7 (x = 0.65) antiferromagnet at 0.5 and 1.8 K in the wider frequency and magnetic field region (40-500 GHz, up to 30 T), and found the breather excitation predicted by the Oshikawa-Affleck (OA) theory. The observed field-induced gap for B||c (chain direction) shows the B2/3 dependence suggested by the OA theory, and the dependence is weak for the other directions which is consistent with the anisotropy of the Dzyaloshinsky-Moriya interaction. The results will be also discussed in connection with the breather excitation observed in Cu-benzoate.",
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T1 - Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex) 2O7 (x = 0.65)

AU - Ohta, H.

AU - Okubo, S.

AU - Fukuoka, D.

AU - Inagaki, Y.

AU - Kunimoto, T.

AU - Kimata, M.

AU - Koyama, K.

AU - Motokawa, M.

AU - Hiroi, Z.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - We have performed the high-field ESR of the one-dimensional BaCu 2(Si1-xGex)2O7 (x = 0.65) antiferromagnet at 0.5 and 1.8 K in the wider frequency and magnetic field region (40-500 GHz, up to 30 T), and found the breather excitation predicted by the Oshikawa-Affleck (OA) theory. The observed field-induced gap for B||c (chain direction) shows the B2/3 dependence suggested by the OA theory, and the dependence is weak for the other directions which is consistent with the anisotropy of the Dzyaloshinsky-Moriya interaction. The results will be also discussed in connection with the breather excitation observed in Cu-benzoate.

AB - We have performed the high-field ESR of the one-dimensional BaCu 2(Si1-xGex)2O7 (x = 0.65) antiferromagnet at 0.5 and 1.8 K in the wider frequency and magnetic field region (40-500 GHz, up to 30 T), and found the breather excitation predicted by the Oshikawa-Affleck (OA) theory. The observed field-induced gap for B||c (chain direction) shows the B2/3 dependence suggested by the OA theory, and the dependence is weak for the other directions which is consistent with the anisotropy of the Dzyaloshinsky-Moriya interaction. The results will be also discussed in connection with the breather excitation observed in Cu-benzoate.

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