| Authors | Z. Lotfi Mahyari, A. Cannell, C. Gomez, S. Tezok, A. Zelati, E. V. L. de Mello, J.-Q. Yan, D. G. Mandrus, J. E. Sonier |
|---|---|
| Journal | Physical Review B |
| Page number | (R)020502 |
| Serial number | 2 |
| Volume number | 89 |
| IF | 3.9 |
| Paper Type | Full Paper |
| Published At | 2014-01-08 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | United States |
Abstract
We report the results of a zero-field muon-spin relaxation (ZF-μSR) 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∼0.02 K.