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Persistent URL http://purl.org/net/epubs/work/43205
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Record Id 43205
Title Muon spin rotation studies of spin dynamics at avoided level crossings in LiY0.998Ho0.002F4
Abstract We have studied the Ho3+ spin dynamics for LiY0.998Ho0.002F4 via the positive muon (mu(+)) transverse field depolarization rate lambda(TF) as a function of temperature and magnetic field. We find sharp minima in lambda(TF)(H) at fields for which the Ho3+ ion system has field-induced (avoided) level crossings. The reduction scales with calculated level repulsions, suggesting that mu(+) depolarization by slow fluctuations of nonresonant Ho3+ spin states is partly suppressed when resonant tunneling opens new fluctuation channels at frequencies much greater than the muon precession frequency.
Organisation CCLRC , ISIS , ISIS-MuSR
Keywords Physics
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Language English (EN)
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Journal Article Phys Rev Lett 99, no. 26 (2007): 267203. 10.1103/PhysRevLett.99.267203 2007