Possible evidence for two-gap superconductivity in TiSe_2Cu_x

Moran Zaberchik; Khanan Chashka; Larisa Patlgan; Ariel Maniv; Chris Baines; Philip King; Amit Kanigel

Possible evidence for two-gap superconductivity in TiSe_2Cu_x

Superconductivity 2010-06-30 v1 Strongly Correlated Electrons

Authors: Moran Zaberchik , Khanan Chashka , Larisa Patlgan , Ariel Maniv , Chris Baines , Philip King , Amit Kanigel

Abstract

We report a comprehensive TF-muSR study of TiSe_2Cu_2. The magnetic penetration depth was found to saturate at low temperature as expected in an s-wave SC. As x is increased we find that the superfluid density increases and the size of the superconducting gap, calculated from the temperature dependence of the superfluid density, is approaching the BCS value. However, for low values of x, the gap is smaller than the weak-coupling BCS prediction suggesting that two superconducting gaps are present in the sample.

Keywords

superconductivity mgb2 superconductivity superconducting tunnel junctions

Cite

@article{arxiv.1006.1630,
  title  = {Possible evidence for two-gap superconductivity in TiSe_2Cu_x},
  author = {Moran Zaberchik and Khanan Chashka and Larisa Patlgan and Ariel Maniv and Chris Baines and Philip King and Amit Kanigel},
  journal= {arXiv preprint arXiv:1006.1630},
  year   = {2010}
}

Comments

Accepted for publication in PRB

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