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

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6 Citations (Scopus)


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 languageEnglish
Article number214512
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2012 Jun 13


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