Manifestations of impurity induced ±⇒++ transition: multiband model for dynamical response functions

D.V. Efremov, A.A. Golubov, O.V. Dolgov

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29 Citations (Scopus)
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Abstract

We investigate the effects of disorder on the density of states, the single-particle response function and optical conductivity in multiband superconductors with s± symmetry of the order parameter, where s± ⇒ s++ transition may take place. In the vicinity of the transition, the superconductive gapless regime is realized. It manifests itself in anomalies in the above-mentioned properties. As a result, intrinsically phase-insensitive experimental methods such as angle-resolved photoemission spectroscopy, tunneling and terahertz spectroscopy may be used to reveal information about the underlying order parameter symmetry.
Original languageEnglish
Article number013002
Number of pages14
JournalNew journal of physics
Volume15
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • METIS-301643
  • IR-88951

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