Anisotropic s -wave superconductivity in CaAlSi single crystals from penetration depth measurements

Ruslan Prozorov; Tyson A. Olheiser; Russell W. Giannetta; Kentaro Uozato; Tsuyoshi Tamegai

doi:10.1103/PhysRevB.73.184523

Anisotropic s -wave superconductivity in CaAlSi single crystals from penetration depth measurements

Ruslan Prozorov
, Tyson A. Olheiser
, Russell W. Giannetta
, Kentaro Uozato
, Tsuyoshi Tamegai

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

In- and out-of-plane London penetration depths were measured in CaAlSi single crystals (Tc =6.2 and 7.3 K) 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.

Original language	English (US)
Article number	184523
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	73
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.73.184523
State	Published - 2006

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.73.184523

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abstract = "In- and out-of-plane London penetration depths were measured in CaAlSi single crystals (Tc =6.2 and 7.3 K) 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.",

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AU - Prozorov, Ruslan

AU - Olheiser, Tyson A.

AU - Giannetta, Russell W.

AU - Uozato, Kentaro

AU - Tamegai, Tsuyoshi

PY - 2006

Y1 - 2006

N2 - In- and out-of-plane London penetration depths were measured in CaAlSi single crystals (Tc =6.2 and 7.3 K) 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.

AB - In- and out-of-plane London penetration depths were measured in CaAlSi single crystals (Tc =6.2 and 7.3 K) 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.

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DO - 10.1103/PhysRevB.73.184523

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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M1 - 184523

ER -

Anisotropic s -wave superconductivity in CaAlSi single crystals from penetration depth measurements

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