Magnetic penetration depths in the mixed state of a heavy-fermion superconductor CeRu2 have been measured by muon spin rotation. An anomalous increase of the observed penetration depth associated with the hysteresis peak of magnetization strongly suggests a new vortex phase, possibly a generalized Fulde-Ferrel-Larkin-Ovchinnikov state, near the upper critical field.
|Number of pages||4|
|Journal||Physical Review Letters|
|Publication status||Published - Nov 10 1997|
ASJC Scopus subject areas
- Physics and Astronomy(all)