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Origin of superconductivity and latent charge density wave in NbS2

Abstract:

We elucidate the origin of the phonon-mediated superconductivity in 2H-NbS2 using the ab initio anisotropic Migdal-Eliashberg theory including Coulomb interactions. We demonstrate that superconductivity is associated with Fermi surface hot spots exhibiting an unusually strong electronphonon interaction. The electron-lattice coupling is dominated by low-energy anharmonic phonons, which place the system on the verge of a charge density wave instability. We also provide definitive evidence for t...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.119.087003

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
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Austrian Science Fund More from this funder
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
119
Pages:
087003
Publication date:
2017-08-01
Acceptance date:
2017-07-26
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
710764
Pubs id:
pubs:710764
UUID:
uuid:ca48ddd4-0d63-4bb8-93fa-f14021ae00d2
Local pid:
pubs:710764
Deposit date:
2017-08-14

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