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

doi:10.1103/PhysRevB.78.054422

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

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Article number	054422
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.78.054422
Publication status	Published - 2008 Aug 18
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 5, 054422, 18.08.2008.

Research output: Contribution to journal › Article › peer-review

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AU - Watanabe, Isao

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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

Abstract

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