μSR-detected soft mode toward a possible phase transition in a disordered spin-gap system, (CH3)2CHNH3-Cu(ClxBr1-x)3

T. Goto; T. Suzuki; I. Watanabe; K. Kanada; T. Saito; A. Oosawa; H. Manaka

doi:10.1016/j.physb.2008.11.107

μSR-detected soft mode toward a possible phase transition in a disordered spin-gap system, (CH₃)₂CHNH₃-Cu(Cl_xBr_1-x)₃

T. Goto, T. Suzuki, I. Watanabe, K. Kanada, T. Saito, A. Oosawa, H. Manaka

Department of Physics

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

Abstract

Measurements of the macroscopic properties have indicated that the bond-disordered spin-gap system (CH₃)₂CHNH₃-Cu(Cl_xBr_1-x)₃ is gapless when x is between 0.44 and 0.87. Using muon spin relaxation to investigate the microscopic properties of a sample with x=0.35, we observed a dynamical spin fluctuation, whose characteristic frequency decreased with decreasing temperature, indicating a magnetic ground state.

Original language	English
Pages (from-to)	594-596
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	404
Issue number	5-7
DOIs	https://doi.org/10.1016/j.physb.2008.11.107
Publication status	Published - 2009 Apr 15

Keywords

Bond-disorder
NMR
Spin-gap system
μSR

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "μSR-detected soft mode toward a possible phase transition in a disordered spin-gap system, (CH3)2CHNH3-Cu(ClxBr1-x)3",

abstract = "Measurements of the macroscopic properties have indicated that the bond-disordered spin-gap system (CH3)2CHNH3-Cu(ClxBr1-x)3 is gapless when x is between 0.44 and 0.87. Using muon spin relaxation to investigate the microscopic properties of a sample with x=0.35, we observed a dynamical spin fluctuation, whose characteristic frequency decreased with decreasing temperature, indicating a magnetic ground state.",

keywords = "Bond-disorder, NMR, Spin-gap system, μSR",

author = "T. Goto and T. Suzuki and I. Watanabe and K. Kanada and T. Saito and A. Oosawa and H. Manaka",

note = "Funding Information: The authors are grateful to Prof. Tomi Ohtsuki and Prof. Tota Nakamura for valuable discussion. This work was supported by KEK-MSL Inter-University Program for Overseas Muon Facilities and by a Grant-in-Aid for Scientific Research on the Priority Area “High Magnetic Field Spin Science in 100 T” from MEXT. ",

year = "2009",

month = apr,

day = "15",

doi = "10.1016/j.physb.2008.11.107",

language = "English",

volume = "404",

pages = "594--596",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - μSR-detected soft mode toward a possible phase transition in a disordered spin-gap system, (CH3)2CHNH3-Cu(ClxBr1-x)3

AU - Goto, T.

AU - Suzuki, T.

AU - Watanabe, I.

AU - Kanada, K.

AU - Saito, T.

AU - Oosawa, A.

AU - Manaka, H.

N1 - Funding Information: The authors are grateful to Prof. Tomi Ohtsuki and Prof. Tota Nakamura for valuable discussion. This work was supported by KEK-MSL Inter-University Program for Overseas Muon Facilities and by a Grant-in-Aid for Scientific Research on the Priority Area “High Magnetic Field Spin Science in 100 T” from MEXT.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - Measurements of the macroscopic properties have indicated that the bond-disordered spin-gap system (CH3)2CHNH3-Cu(ClxBr1-x)3 is gapless when x is between 0.44 and 0.87. Using muon spin relaxation to investigate the microscopic properties of a sample with x=0.35, we observed a dynamical spin fluctuation, whose characteristic frequency decreased with decreasing temperature, indicating a magnetic ground state.

AB - Measurements of the macroscopic properties have indicated that the bond-disordered spin-gap system (CH3)2CHNH3-Cu(ClxBr1-x)3 is gapless when x is between 0.44 and 0.87. Using muon spin relaxation to investigate the microscopic properties of a sample with x=0.35, we observed a dynamical spin fluctuation, whose characteristic frequency decreased with decreasing temperature, indicating a magnetic ground state.

KW - Bond-disorder

KW - NMR

KW - Spin-gap system

KW - μSR

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JF - Physica B: Condensed Matter

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