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

John S. Van Dyke*, J. C. Seamus Davis, Dirk K. Morr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We demonstrate that the electronic band structure extracted from quasiparticle interference spectroscopy [Nat. Phys. 9, 468 (2013)] and the theoretically computed form of the superconducting gaps [Proc. Natl. Acad. Sci. USA 111, 11663 (2014)] can be used to understand the dI/dV line shape measured in the normal and superconducting state of CeCoIn5 [Nat. Phys. 9, 474 (2013)]. 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.

Original languageEnglish
Article number041107
Number of pages5
JournalPhysical Review. B, Condensed matter and materials physics
Volume93
Issue number4
DOIs
Publication statusPublished - 22 Jan 2016

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