期刊
PHYSICAL REVIEW B
卷 89, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.020502
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资金
- Canadian Institute of Advanced Research
- Natural Sciences and Engineering Research Council of Canada
- U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
We report the results of a zero-field muon-spin relaxation (ZF-mu SR) study of superconducting Ba1-xKxFe2As2 (0.5 <= x <= 0.9) in search of weak spontaneous internal magnetic fields associated with proposed time-reversal-symmetry-breaking mixed pairing states. The measurements were performed on polycrystalline samples, which do not exhibit the mesoscopic phase separation previously observed in single crystals of Ba1-xKxFe2As2. No evidence of spontaneous internal magnetic fields is found in any of the samples at temperatures down to T similar to 0.02 K.
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