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Tissen, V. G., Osorio, M. R., Brison, J. P., Nemes, N. M., Garcia-Hernandez, M., Cario, L., Rodiere, P., Vieira, S. & Suderow, H. (2013) Pressure dependence of superconducting critical temperature and upper critical field of 2H-NbS2. Phys. Rev. B, 87. 
Added by: Laurent Cournède (2016-03-10 21:23:31)
Type de référence: Article
DOI: 10.1103/PhysRevB.87.134502
Numéro d'identification (ISBN etc.): 1098-0121
Clé BibTeX: Tissen2013
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Catégories: PMN
Mots-clés: charge-density waves, crystals, layer compounds, nbse2, order, quantum phase-transition, stm, transition-metal dichalcogenides
Créateurs: Brison, Cario, Garcia-Hernandez, Nemes, Osorio, Rodiere, Suderow, Tissen, Vieira
Collection: Phys. Rev. B
Consultations : 3/529
Indice de consultation : 2%
Indice de popularité : 0.5%
We present measurements of the superconducting critical temperature T-c and upper critical field H-c2 as a function of pressure in the transition metal dichalcogenide 2H-NbS2 up to 20 GPa. We observe that Tc increases smoothly from 6 K at ambient pressure to about 8.9 K at 20 GPa. This range of increase is comparable to the one found previously in 2H-NbSe2. The temperature dependence of the upper critical field H-c2(T) of 2H-NbS2 varies considerably when increasing the pressure. At low pressures, H-c2(0) decreases, and at higher pressures both T-c and H-c2(0) increase simultaneously. This points out that there are pressure induced changes of the Fermi surface, which we analyze in terms of a simplified two-band approach. DOI: 10.1103/ PhysRevB. 87.134502
Added by: Laurent Cournède  
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