2006/02/28 by Ruslan Prozorov, R. Prozorov, Tyson A. Olheiser +7 · 2 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.73.184523
published as Phys. Rev. B 73, 184523 (2006) · 4 pages
arxiv created 2006/04/16 · openalex publication_date 2006/05/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In- and out-of-plane London penetration depths were measured in CaAlSi single crystals (Tc=6.2 and 7.3\phantom\rule0.3em0exK) using a tunnel-diode resonator. A full three-dimensional (3D) BCS analysis of the superfluid density is consistent with a prolate spheroidal gap, with a weak-coupling BCS value in the ab plane and stronger coupling along the c axis. The gap anisotropy was found to significantly decrease for higher Tc samples.