Superconductivity and Field-Induced Magnetism in SrFe1.75Co0.25As2
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Using muon-spin rotation, we studied the in-plane (lambda(ab)) and the out of plane (lambda(c)) magnetic field penetration depth in SrFe1.75Co0.25As2 (T-c similar or equal to 13.3 K). The penetration depth anisotropy gamma(lambda)=lambda(c)/lambda(ab) increases from gamma(lambda)similar or equal to 2.1 at T-c to 2.7 at 1.6 K. The mean internal field in the superconducting state increases with decreasing temperature, just opposite to the diamagnetic response seen in magnetization experiments. This unusual behavior suggests that the external field induces a magnetic order which is maintained throughout the whole sample volume.
Details
Original language | English |
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Article number | 067010 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 103 |
Issue number | 6 |
Publication status | Published - 7 Aug 2009 |
Peer-reviewed | Yes |
External IDs
Scopus | 68849084255 |
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Keywords
Keywords
- MUON SPIN ROTATION, PHASE-DIAGRAM, COEXISTENCE