Thermodynamic and superconducting properties of the C32 intermetallic compounds CaAlSi and SrAlSi

B. Lorenz, J. Cmaidalka, R. L. Meng, Y. Y. Xue, C. W. Chu

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

We investigate the thermodynamic and superconducting properties of the intermetallic C32 compounds CaAlSi and SrAlSi. The heat capacity of SrAlSi follows the BCS-theory for weak coupling, but the data for CaAlSi indicate an enhanced coupling strength in the latter compound. The characteristic parameters of the normal and superconducting states are evaluated. The effect of high pressure on Tc is positive in CaAlSi but negative in SrAlSi. The opposite signs of the pressure coefficients of Tc indicate distinct differences in the electronic structure at the Fermi energy.

Original languageEnglish
Pages (from-to)171-172
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume408-410
Issue number1-4
DOIs
Publication statusPublished - 2004 Aug
EventProceedings of the International Conference on Materials - Rio de Janeiro, Brazil
Duration: 2003 May 252003 May 30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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