Stoner gap in the superconducting ferromagnet UGe2

Details Stoner gap in the superconducting ferromagnet UGe2 Stoner gap in the superconducting ferromagnet UGe2

2005-05-11

arxiv.org/abs/cond-mat/0505266v2

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures. to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.73.054512

We report the temperature ($T$) dependence of ferromagnetic Bragg peak intensities and dc magnetization of the superconducting ferromagnet UGe2 under pressure ($P$). We have found that the low-$T$ behavior of the uniform magnetization can be explained by a conventional Stoner model. A functional analysis of the data produces the following results: The ferromagnetic state below a critical pressure can be understood as the perfectly polarized state, in which heavy quasiparticles occupy only majority spin bands. A Stoner gap $\Delta(P)$ decreases monotonically with increasing pressure and increases linearly with magnetic field. We show that the present analysis based on the Stoner model is justified by a consistency check, i.e., comparison of density of states at the Fermi energy deduced from the analysis with observed electronic specific heat coeffieients. We also argue the influence of the ferromagnetism on the superconductivity.

Affiliated with

Also associated with

No associations

Rating

Stoner gap in the superconducting ferromagnet UGe2 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 Stoner gap in the superconducting ferromagnet UGe2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stoner gap in the superconducting ferromagnet UGe2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72972