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Scanning Tunneling Microscopy in the superconductor LaSb2
- Source :
- Phys. Rev. B 87, 214504 (2013)
- Publication Year :
- 2013
-
Abstract
- We present very low temperature (0.15 K) scanning tunneling microscopy and spectroscopy experiments in the layered superconductor LaSb$_2$. We obtain topographic microscopy images with surfaces showing hexagonal and square atomic size patterns, and observe in the tunneling conductance a superconducting gap. We find well defined quasiparticle peaks located at a bias voltage comparable to the weak coupling s-wave BCS expected gap value (0.17 meV). The amount of states at the Fermi level is however large and the curves are significantly broadened. We find T$_c$ of 1.2 K by following the tunneling conductance with temperature.<br />Comment: 5 pages, 4 figures
- Subjects :
- Condensed Matter - Superconductivity
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 87, 214504 (2013)
- Publication Type :
- Report
- Accession number :
- edsarx.1306.3042
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.87.214504