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Kacmarcik, J., Szabo, P., Samuely, P., Rodrigo, J. G., Suderow, H., Vieira, S., Lafond, A. & Meerschaut, A. (2008) Intrinsic Josephson junction behaviour of the low T-c superconductor (LaSe)(1.14)(NbSe2). Physica C, 468 543–546. 
Added by: Laurent Cournède (2016-03-10 21:58:42)
Type de référence: Article
DOI: 10.1016/j.physc.2007.11.062
Numéro d'identification (ISBN etc.): 0921-4534
Clé BibTeX: Kacmarcik2008
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Catégories: CESES
Mots-clés: electron transport, intrinsic Josephson junction, stm/sts
Créateurs: Kacmarcik, Lafond, Meerschaut, Rodrigo, Samuely, Suderow, Szabo, Vieira
Collection: Physica C
Consultations : 1/466
Indice de consultation : 3%
Indice de popularité : 0.75%
Résumé     
Interlayer magnetotransport measurements on the highly anisotropic (LaSe)(1.14)(NbSe2) superconductor with T-c similar to 1.2 K have indicated that this layered compound represents a model system of intrinsic Josephson junctions [P. Szabo et al., Phys. Rev. Lett. 86 (2001) 5990]. Scanning tunneling microscopy at room temperature and tunneling spectroscopy measurements at very low temperatures are presented in this work. STM imaging has revealed the presence of two types of surfaces which can be attributed to the appearance of LaSe or NbSe2 layers on the surface. The use of STM tip made of superconducting lead enabled a precise measurement of the temperature dependence of the superconducting energy gap Delta(T) on the NbSe2 layer. Delta(T) obtained from the surface sensitive STS data support the scenario obtained from our previous interlayer - ergo bulk sensitive magnetotransport measurements. (c) 2008 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
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