Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Electronic structure and fermiology of superconducting LaNiGa 2

Electronic structure and fermiology of superconducting LaNiGa 2 We report electronic structure calculations for the layered centrosymmetric superconductor LaNiGa 2 , which has been identified as having a possible triplet state based on evidence for time reversal symmetry breaking. The Fermi surface has several large sheets and is only moderately anisotropic, so that the material is best described as a three-dimensional metal. These include sections that are open in the in-plane direction as well as a section that approaches the zone center. The density of states is high and primarily derived from Ga p states, which hybridize with Ni d states. Comparing with experimental specific heat data, we infer a superconducting λ ≤ 0.55 , which implies that this is a weak to intermediate coupling material. However, the Ni occurs in a nominal d 10 configuration in this material, which places the compound far from magnetism. Implications of these results for superconductivity are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Electronic structure and fermiology of superconducting LaNiGa 2

Singh, David J
Physical Review B , Volume 86 (17) – Nov 1, 2012
Download PDF
4 pages

Loading next page...
 
/lp/american-physical-society-aps/electronic-structure-and-fermiology-of-superconducting-laniga-2-84R1MzHl5b

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 2012 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.86.174507
Publisher site
See Article on Publisher Site

Abstract

We report electronic structure calculations for the layered centrosymmetric superconductor LaNiGa 2 , which has been identified as having a possible triplet state based on evidence for time reversal symmetry breaking. The Fermi surface has several large sheets and is only moderately anisotropic, so that the material is best described as a three-dimensional metal. These include sections that are open in the in-plane direction as well as a section that approaches the zone center. The density of states is high and primarily derived from Ga p states, which hybridize with Ni d states. Comparing with experimental specific heat data, we infer a superconducting λ ≤ 0.55 , which implies that this is a weak to intermediate coupling material. However, the Ni occurs in a nominal d 10 configuration in this material, which places the compound far from magnetism. Implications of these results for superconductivity are discussed.

Journal

Physical Review B – American Physical Society (APS)

Published: Nov 1, 2012

There are no references for this article.