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Time-reversal Symmetry-breaking Nematic Superconductivity In Fese

Title: Time-reversal Symmetry-breaking Nematic Superconductivity In Fese.
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Name(s): Kang, Jian, author
Chubukov, Andrey, author
Fernandes, Rafael M., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-08-20
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: FeSe is a unique member of the family of iron-based superconductors, not only because of the high values of T-c in FeSe monolayer, but also because in bulk FeSe superconductivity emerges inside a nematic phase without competing with long-range magnetic order. Near T-c, superconducting order necessarily has s + d symmetry, because nematic order couples linearly the s-wave and d-wave harmonics of the superconducting order parameter. Here we argue that the near-degeneracy between s-wave and d-wave pairing instabilities in FeSe, combined with the sign-change of the nematic order parameter between hole and electron pockets, allows the superconducting order to break time-reversal symmetry at a temperature T* < T(c. )The transition from an s + d state to an s + e(i alpha)d state should give rise to a peak in the specific heat and to the emergence of a soft collective mode that can be potentially detected by Raman spectroscopy.
Identifier: FSU_libsubv1_wos_000442194600005 (IID), 10.1103/PhysRevB.98.064508 (DOI)
Keywords: electronic-structure, frustration, iron chalcogenides
Publication Note: The publisher’s version of record is available at https://doi.org/10.1103/PhysRevB.98.064508
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000442194600005
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 6, vol. 98

Choose the citation style.
Kang, J., Chubukov, A., & Fernandes, R. M. (2018). Time-reversal Symmetry-breaking Nematic Superconductivity In Fese. Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000442194600005