Large spin-orbit splitting and weakly anisotropic superconductivity revealed with single-crystalline noncentrosymmetric CaIrSi 3

G. Eguchi, H. Wadati, T. Sugiyama, E. Ikenaga, S. Yonezawa, Y. Maeno

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report normal and superconducting properties of the Rashba-type noncentrosymmetric compound CaIrSi 3 using single crystalline samples with nearly 100% superconducting volume fraction. The electronic density of states revealed by the hard x-ray photoemission spectroscopy can be well explained by the relativistic first-principles band calculation. This indicates that strong spin-orbit interaction indeed affects the electronic states of this compound. The obtained H-T phase diagram exhibits only approximately 10% anisotropy, indicating that the superconducting properties are almost three dimensional. Nevertheless, strongly anisotropic vortex pinning is observed.

Original languageEnglish
Article number184510
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number18
DOIs
Publication statusPublished - Nov 15 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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