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

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

doi:10.1103/PhysRevB.93.041107

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 journal › Article › peer-review

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 d_x²-y² symmetry. These results strongly support a recently proposed microscopic origin of the unconventional superconducting state.

Original language	English
Article number	041107
Number of pages	5
Journal	Physical Review. B, Condensed matter and materials physics
Volume	93
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.93.041107
Publication status	Published - 22 Jan 2016

Access to Document

10.1103/PhysRevB.93.041107

Davis_2016_PhysRevB_CeCoIn5_FinalPubVersion
© 2016 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1103/PhysRevB.93.041107
Final published version, 2.03 MB

Cite this

@article{6468bc8402bb4a4a9f5343b1808e5306,

title = "Differential conductance and defect states in the heavy-fermion superconductor CeCoIn5",

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.",

author = "\{Van Dyke\}, \{John S.\} and Davis, \{J. C. Seamus\} and Morr, \{Dirk K.\}",

note = "This work was supported by the U. S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DEFG02- 05ER46225 (J.S.V. and D.K.M.) and used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-FG02-05ER46225 (J.S.V. and D.K.M.). Experimental contributions to this research were supported by U.S. DOE under Contract No. DE-AC02-98CH10886 (J.C.S.D.).",

year = "2016",

month = jan,

day = "22",

doi = "10.1103/PhysRevB.93.041107",

language = "English",

volume = "93",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Differential conductance and defect states in the heavy-fermion superconductor CeCoIn5

AU - Van Dyke, John S.

AU - Davis, J. C. Seamus

AU - Morr, Dirk K.

N1 - This work was supported by the U. S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DEFG02- 05ER46225 (J.S.V. and D.K.M.) and used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-FG02-05ER46225 (J.S.V. and D.K.M.). Experimental contributions to this research were supported by U.S. DOE under Contract No. DE-AC02-98CH10886 (J.C.S.D.).

PY - 2016/1/22

Y1 - 2016/1/22

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84955455177

U2 - 10.1103/PhysRevB.93.041107

DO - 10.1103/PhysRevB.93.041107

M3 - Article

SN - 1098-0121

VL - 93

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 4

M1 - 041107

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Cite this

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

Abstract

Access to Document

Other files and links

Fingerprint

Projects

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Cite this

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