Abstract
We found an anomalous temperature dependence of 115In-NMR spectrum in the newly discovered high field and low-temperature superconducting phase of CeCoIn5. The anomalies near the upper limit of Hc 2 are attributed to spatially distributed local density of states of quasiparticles. From a simulation model with sinusoidally modulated superconducting order parameter, the present NMR study at a microscopic point of view provides a direct evidence that the Fulde-Ferrell-Larkin-Ovchinikov (FFLO) state is realized at the high-field phase in CeCoIn5.
Original language | English |
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Pages (from-to) | 347-350 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 378-380 |
Issue number | SPEC. ISS. |
DOIs | |
Publication status | Published - May 1 2006 |
Externally published | Yes |
Keywords
- CeCoIn
- FFLO
- Heavy fermion compound
- NMR
- Superconductivity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering