Muon spin relaxation detection of the soft mode toward the exotic magnetic ground state in the bond-disordered quantum spin system IPA-Cu (Cl0.35 Br0.65) 3

Takayuki Goto, Takao Suzuki, Keishi Kanada, Takehiro Saito, Akira Oosawa, Isao Watanabe, Hirotaka Manaka

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The spin-gap system with a bond-disorder (CH3) 2 CHNH3 -Cu (Clx Br1-x) 3 is reported by experiments on macroscopic quantities of the uniform susceptibility and the specific heat to show a magnetic order at low temperatures (when the value of x is within the limited region between 0.44 and 0.87) and otherwise a gapped behavior. We have investigated microscopically the ground state of the sample with x=0.35 by muon spin relaxation (μSR) to observe that the frequency spectrum of the spin fluctuation tends to concentrate around zero energy as lowering temperatures. This behavior was interpreted as the soft mode toward the possible magnetic phase transition at absolute zero.

本文言語English
論文番号054422
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
78
5
DOI
出版ステータスPublished - 2008 8 18
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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