Localization length of a soliton from a nonmagnetic impurity in a general double-spin-chain model

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Localization length of a free-spin soliton from a nonmagnetic impurity is deduced in a general double-spin-chain model (Formula presented) model). We have solved a variational problem which employs the nearest-neighbor singlet-dimer basis. The wave function of a soliton is expressed by the Airy function, and the localization length (ξ) is found to obey a power law of the dimerization (Formula presented) with an exponent (Formula presented) (Formula presented) This explains why (Formula presented) does not show the antiferromagnetic order, while (Formula presented) does by impurity doping. When the gap exists by the bond dimerization, a soliton is localized and no order is expected. On the contrary, there is a possibility of the order when the gap is mainly due to frustration.

本文言語English
ページ(範囲)R6589-R6592
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
59
10
DOI
出版ステータスPublished - 1999
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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