Tunneling spectroscopy of the superconducting state of URu 2Si 2

A. Maldonado; I. Guillamon; J. G. Rodrigo; H. Suderow; S. Vieira; D. Aoki; J. Flouquet

doi:10.1103/PhysRevB.85.214512

Tunneling spectroscopy of the superconducting state of URu ₂Si ₂

A. Maldonado, I. Guillamon, J. G. Rodrigo, H. Suderow, S. Vieira, D. Aoki, J. Flouquet

IMR - Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We present measurements of the superconducting gap of URu ₂Si ₂ made with scanning tunneling microscopy using a superconducting tip of Al. We find tunneling conductance curves with a finite value at the Fermi level. The density of states is V shaped at low energies, and the quasiparticle peaks are located at values close to the expected superconducting gap from weak-coupling BCS theory. Our results point to rather opened gap structures and gap nodes on the Fermi surface.

Original language	English
Article number	214512
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.85.214512
Publication status	Published - 2012 Jun 13

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10.1103/PhysRevB.85.214512

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title = "Tunneling spectroscopy of the superconducting state of URu 2Si 2 ",

abstract = "We present measurements of the superconducting gap of URu 2Si 2 made with scanning tunneling microscopy using a superconducting tip of Al. We find tunneling conductance curves with a finite value at the Fermi level. The density of states is V shaped at low energies, and the quasiparticle peaks are located at values close to the expected superconducting gap from weak-coupling BCS theory. Our results point to rather opened gap structures and gap nodes on the Fermi surface.",

author = "A. Maldonado and I. Guillamon and Rodrigo, {J. G.} and H. Suderow and S. Vieira and D. Aoki and J. Flouquet",

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T1 - Tunneling spectroscopy of the superconducting state of URu 2Si 2

AU - Maldonado, A.

AU - Guillamon, I.

AU - Rodrigo, J. G.

AU - Suderow, H.

AU - Vieira, S.

AU - Aoki, D.

AU - Flouquet, J.

PY - 2012/6/13

Y1 - 2012/6/13

N2 - We present measurements of the superconducting gap of URu 2Si 2 made with scanning tunneling microscopy using a superconducting tip of Al. We find tunneling conductance curves with a finite value at the Fermi level. The density of states is V shaped at low energies, and the quasiparticle peaks are located at values close to the expected superconducting gap from weak-coupling BCS theory. Our results point to rather opened gap structures and gap nodes on the Fermi surface.

AB - We present measurements of the superconducting gap of URu 2Si 2 made with scanning tunneling microscopy using a superconducting tip of Al. We find tunneling conductance curves with a finite value at the Fermi level. The density of states is V shaped at low energies, and the quasiparticle peaks are located at values close to the expected superconducting gap from weak-coupling BCS theory. Our results point to rather opened gap structures and gap nodes on the Fermi surface.

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JF - Physical Review B - Condensed Matter and Materials Physics

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ER -

Tunneling spectroscopy of the superconducting state of URu ₂Si ₂

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