Mañana, JUEVES, 24 DE ABRIL, el sistema se apagará debido a tareas habituales de mantenimiento a partir de las 9 de la mañana. Lamentamos las molestias.
Scanning tunneling microscopy in the superconductor LaSb2
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Physical SocietyDate
2013-06-06Citation
10.1103/PhysRevB.87.214504
Physical Review B 87.21 (2013): 214504
ISSN
1098-0121 (print); 1550-235X (online)DOI
10.1103/PhysRevB.87.214504Funded by
This work was supported by the Spanish MINECO (Consolider Ingenio Molecular Nanoscience CSD2007-00010 program, FIS2011-23488, ACI-2009-0905), by the Comunidad de Madrid through program Nanobiomagnet, and by COST MP1201. Work at the Ames Laboratory was supported by the US Department of Energy, Basic Energy Sciences, Division of Materials Sciences and Engineering under Contract No. DE-AC02-07CH11358Project
Gobierno de España. CSD2007-00010; Gobierno de España. FIS2011-23488; Gobierno de España. ACI-2009-0905; Comunidad de Madrid. S2009/MAT-1726/NANOBIOMAGNETEditor's Version
http://dx.doi.org/10.1103/PhysRevB.87.214504Subjects
FísicaRights
© 2013 American Physical SocietyAbstract
We present very low temperature (0.15 K) scanning tunneling microscopy and spectroscopy experiments in the layered superconductor LaSb2. 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 Tc of 1.2 K by following the tunneling conductance with temperature
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Google Scholar:Galvis, J. A.
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Suderow Rodríguez, Hermann Jesús
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Vieira Díaz, Sebastián
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Canfield, P. C.
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Bud'ko, S. L.
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