Low-energy spin dynamics in randomness-introduced spin-gap systems

Physical Review B - Condensed Matter and Materials Physics

Volumn 82, Issue 9, 2010, Pages

  Suzuki, Takao ^a,b   Yamada, Fumiko ^c   Yamada, Motoki ^c   Kawamata, Takayuki ^b,e   Ishii, Yasuyuki ^b   Watanabe, Isao ^b   Goto, Takayuki ^d   Tanaka, Hidekazu ^c  

^a INTERNATIONAL CHRISTIAN UNIVERSITY   (Japan)

^b RIKEN Nishina Center for Accelerated Based Science   (Japan)

^c TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^d SOPHIA UNIVERSITY   (Japan)

^e NAGOYA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77957681618     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.82.094447     Document Type: Article

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50. By μ SR measurements, which is a local probe, it is hard to distinguish between a magnetically ordered state and a randomly spin frozen state when the internal magnetic field at muon sites exceeds the time-resolution limit of detection of muon spin rotation. However, in this spin-gap system, it has been confirmed that the collapse of the spin gap leads to the appearance of a magnetically ordered state by magnetization, neutron-scattering, and specific-heat measurements. Thus, we use the word "ordered state" and should emphasize that it is not suggested by μ SR measurements but by other macroscopic probes. Indeed, no evidence for a static field is seen in μ SR time spectra in this study.