Effect of disorder on superconductivity in the presence of spin-density wave order

Mishra, Vivek

doi:10.1103/PhysRevB.91.104501

Title: Effect of disorder on superconductivity in the presence of spin-density wave order

Journal Article · 02 March 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI: https://doi.org/10.1103/PhysRevB.91.104501 · OSTI ID:1385582

Mishra, Vivek ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States)

The majority of unconventional superconductors has close proximity to a magnetic phase. In many cases, the magnetic phase coexists with superconductivity in some fraction of the phase diagram. The response of these two competing phases to disorder can be used as a tool to gain a better understanding of these complex systems. Here I consider the effect of disorder on a multiband superconductor appropriate for the ferro-pnictide superconductors. I consider both interband and intraband scattering for a two-band model consisting of a hole pocket and an electron pocket. The scattering from pointlike impurities is treated within the self-consistent Born approximation. I calculate the effect of disorder on the transition temperature to the superconducting state. Finally, the influence of impurity scattering on the low-energy excitation spectrum in the superconducting state is also studied for different kinds of gap structures.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-98CH10886

OSTI ID:: 1385582

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 10 Vol. 91; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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The influence of structural disorder and phonon on metal-to-insulator transition of VO 2 Hwang, In-Hui; Jin, Zhenlan; Park, Chang-In Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-14235-w	journal	November 2017
Disorder raises the critical temperature of a cuprate superconductor Leroux, Maxime; Mishra, Vivek; Ruff, Jacob P. C. Proceedings of the National Academy of Sciences, Vol. 116, Issue 22 https://doi.org/10.1073/pnas.1817134116	journal	May 2019
Effect of disorder on the competition between nematic and superconducting order in FeSe Mishra, V.; Hirschfeld, P. J. New Journal of Physics, Vol. 18, Issue 10 https://doi.org/10.1088/1367-2630/18/10/103001	journal	October 2016
Impurity scattering effects on the superconducting properties and the tetragonal-to-orthorhombic phase transition in FeSe Abdel-Hafiez, M.; Pu, Y. J.; Brisbois, J. Physical Review B, Vol. 93, Issue 22 https://doi.org/10.1103/physrevb.93.224508	journal	June 2016
Energy gap evolution across the superconductivity dome in single crystals of (Ba _{1− x} K _x )Fe ₂ As ₂ Cho, Kyuil; Kończykowski, Marcin; Teknowijoyo, Serafim Science Advances, Vol. 2, Issue 9 https://doi.org/10.1126/sciadv.1600807	journal	September 2016
Energy Gap Evolution Across the Superconductivity Dome in Single Crystals of (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ Cho, Kyuil; Konczykowski, M.; Teknowijoyo, S. arXiv https://doi.org/10.48550/arxiv.1605.04183	text	January 2016
Disorder raises the critical temperature of a cuprate superconductor Leroux, Maxime; Mishra, Vivek; Ruff, Jacob P. C. arXiv https://doi.org/10.48550/arxiv.1808.05984	text	January 2018

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