Manifestations of impurity-induced s±⇒s++ transition: Multiband model for dynamical response functions
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Date
2013
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Volume
15
Issue
Journal
New Journal of Physics
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Publisher
Bristol : IOP
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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.
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Efremov, D., Golubov, A. A., & Dolgov, O. V. (2013). Manifestations of impurity-induced s±⇒s++ transition: Multiband model for dynamical response functions (Bristol : IOP). Bristol : IOP. https://doi.org//10.1088/1367-2630/15/1/013002
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CC BY-NC-SA 3.0 Unported