Journal
APPLIED MAGNETIC RESONANCE
Volume 51, Issue 1, Pages 71-84Publisher
SPRINGER WIEN
DOI: 10.1007/s00723-019-01175-z
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The low temperature (T < 5 K) electron spin resonance in topological Kondo insulator SmB6 is investigated. It is shown that spin relaxation time of the paramagnetic centers responsible for low temperature electron spin resonance in SmB6 is about approx 10(-8) s, which exceeds by five orders of magnitude the widely accepted spin and charge fluctuation time approx 10(-13) s in the homogeneous mixed valence state of this material. This discrepancy may be attributed to the formation of the specific paramagnetic centers in the sample surface-spin polarons.
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