High-field ESR in one-dimensional quantum spin systems

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

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

We applied the high-field ESR technique to study the field-dependent behavior of two quantum spin chains. In the half-integer (S = 1/2) antiferromagnet Cu-benzoate, we observed rather unusual temperature- and field-dependences of the shift and width of the resonance line. These results are discussed in the context of the recent theoretical description by Oshikawa and Affleck, which predicts, for this compound, the opening of a field-induced energy gap at low temperature. For the integer (S = 1) antiferromagnet Ni(C5H14N2)2N3(ClO 4), we observed various ESR modes both in the nonmagnetic Haldane phase (H < Hc) and in the magnetic high-field phase (H > Hc) where Hc is the critical field at which the Haldane gap closes. From the frequency-field diagram and the temperature dependence of the signal intensity, we discuss the possible origin of these ESR modes.

本文言語英語
ページ(範囲)1625-1626
ページ数2
ジャーナルPhysica B: Condensed Matter
284-288
PART II
DOI
出版ステータス出版済み - 2000
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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