Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5

Details Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5 Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5

2010-01-13

arxiv.org/abs/1001.2142v1

New J. Phys. 12, 023026 (2010)

Physics

Condensed Matter

Superconductivity

Submitted to New Journal of Physics, 13 pages, 4 figures

Scientific paper

10.1088/1367-2630/12/2/023026

From small-angle neutron scattering studies of the flux line lattice (FLL) in CeCoIn5, with magnetic field applied parallel to the crystal c-axis, we obtain the field- and temperature-dependence of the FLL form factor, which is a measure of the spatial variation of the field in the mixed state. We extend our earlier work [A.D. Bianchi et al. 2008 Science 319, 177] to temperatures up to 1250 mK. Over the entire temperature range, paramagnetism in the flux line cores results in an increase of the form factor with field. Near H_c2 the form factor decreases again, and our results indicate that this fall-off extends outside the proposed FFLO region. Instead, we attribute the decrease to a paramagnetic suppression of Cooper pairing. At higher temperatures, a gradual crossover towards more conventional mixed state behavior is observed.

Affiliated with

Also associated with

No associations

Rating

Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-525143