Relaxation of frustration and gap enhancement by the lattice distortion in the Δ chain

Tota Nakamura, Satoshi Takada

研究成果: Article査読

11 被引用数 (Scopus)

抄録

We consider the instability of the ground state of the Δ chain against a lattice distortion increasing the bond strength (λ) in each triangle. It relaxes the frustration and causes a remarkable gap enhancement; only a 6% increase of λ doubles the gap compared to the fully-frustrated case (λ = 1). The lowest excitation is revealed to be a kink-antikink bound state whose correlation length decreases drastically with λ increase. The enhancement follows a power law, ΔEgap ∼ (λ - 1) + 1.44(λ - 1)2/3, which can be obtained from the exact result of the continuum model.

本文言語English
ページ(範囲)315-320
ページ数6
ジャーナルPhysics Letters, Section A: General, Atomic and Solid State Physics
225
4-6
DOI
出版ステータスPublished - 1997 2月 3
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Relaxation of frustration and gap enhancement by the lattice distortion in the Δ chain」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル