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Differential conductance and defect states in the heavy-fermion superconductor CeCoIn5

Cornell Affiliated Author(s)

Author

J.S. Van Dyke
J.C.S. Davis
D.K. Morr

Abstract

We demonstrate that the electronic band structure extracted from quasiparticle interference spectroscopy [Nat. Phys. 9, 468 (2013)1745-247310.1038/nphys2671] and the theoretically computed form of the superconducting gaps [Proc. Natl. Acad. Sci. USA 111, 11663 (2014)PNASA60027-842410.1073/pnas.1409444111] can be used to understand the dI/dV line shape measured in the normal and superconducting state of CeCoIn5 [Nat. Phys. 9, 474 (2013)1745-247310.1038/nphys2672]. In particular, the dI/dV line shape, and the spatial structure of defect-induced impurity states, reflects the existence of multiple superconducting gaps of dx2-y2 symmetry. These results strongly support a recently proposed microscopic origin of the unconventional superconducting state. © 2016 American Physical Society.

Date Published

Journal

Physical Review B

Volume

93

Issue

4

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955455177&doi=10.1103%2fPhysRevB.93.041107&partnerID=40&md5=ec02d1e43d526ffb3f92d839ba71ac39

DOI

10.1103/PhysRevB.93.041107

Group (Lab)

J.C. Seamus Davis Group

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