Abstract：
:An inhomogeneous superconducting state, not yet conclusively identified, was predicted by Fulde and Ferrell and Larkin and Ovchinnikov (FFLO) to arise in superconductors with strong Pauli limiting, a consequence of the electrons' Zeeman (spin) energy in a magnetic field. Radovan et al. propose that the observed cascades of steps in magnetization of the heavy fermion superconductor CeCoIn5, within the recently discovered second low-temperature state, are due to transitions between Landau-level (LL) states with different m-quanta vortices, expected under certain conditions when the magnetic field is swept within the FFLO state. The authors then conclude that the observed steps in magnetization constitute a proof that the low-temperature state in CeCoIn5 is indeed an FFLO state. We argue that this interpretation of the observed steps in magnetization cannot be supported on either quantitative or qualitative grounds.
journal_name
Naturejournal_title
Natureauthors
Movshovich R,Bianchi A,Capan C,Jaime M,Goodrich RGdoi
10.1038/427802akeywords:
subject
Has Abstractpub_date
2004-02-26 00:00:00pages
802; discussion 802issue
6977eissn
0028-0836issn
1476-4687pii
427802ajournal_volume
427pub_type
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