Abstract
Evidence for static alternating magnetic fields in the vortex cores of underdoped [Formula presented] is reported. Muon spin rotation measurements of the internal magnetic field distribution of the vortex state of [Formula presented] in applied fields of [Formula presented] and [Formula presented] reveal a feature in the high-field tail of the field distribution which is not present in optimally doped [Formula presented] and which fits well to a model with static magnetic fields in the vortex cores. The magnitude of the fields is estimated to be 18(2) G and decreases above [Formula presented]. We discuss possible origins of the additional vortex core magnetism within the context of existing theories.
Original language | American English |
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Pages (from-to) | 4 |
Number of pages | 1 |
Journal | Physical review letters |
Volume | 88 |
Issue number | 13 |
DOIs | |
State | Published - 2002 |
ASJC Scopus subject areas
- Physics and Astronomy(all)