Tunneling spectroscopy of the superconducting state of URu2Si2

Details Tunneling spectroscopy of the superconducting state of URu2Si2 Tunneling spectroscopy of the superconducting state of URu2Si2

2012-01-09

arxiv.org/abs/1201.1865v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We present measurements of the superconducting gap of URu2Si2 made with scanning tunneling microscopy (STM) using a superconducting tip of Al. We find tunneling conductance curves with a finite density of states at the Fermi level, being V shaped at low energies. Quasiparticle peaks are located at different energy positions, between 0.19 meV and 0.24 meV. Our results point to rather opened gap structures and gap nodes on the Fermi surface.

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