Journal
PHYSICAL REVIEW B
Volume 85, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.214512
Keywords
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Funding
- Spanish MICINN
- MEC [CSD2007-00010, FIS2011-23488, ACI-2009-0905]
- FPU
- Comunidad de Madrid through program Nanobiomagnet
- ERC
- French ANR
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We present measurements of the superconducting gap of URu2Si2 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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