Pressure dependence of superconducting critical temperature and upper critical field of 2H-NbS2

Autor: Tissen, V.G., Osorio, M.R., Brison, Jean-Pascal, Nemes, N.M., Garcia-Hernandez, M., Cario, Laurent, Rodiere, Pierre, Vieira, Sebastian, Suderow, H.
Přispěvatelé: Departamento de Fisica de la Materia Condensada [Madrid] (FMC), Facultad de Ciencas [Madrid], Universidad Autonoma de Madrid (UAM)-Universidad Autonoma de Madrid (UAM), Service de Physique Statistique, Magnétisme et Supraconductivité (SPSMS - UMR 9001), Institut Nanosciences et Cryogénie (INAC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Dept Fis Applicada, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Magnétisme et Supraconductivité (MagSup), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), UAM. Departamento de Física de la Materia Condensada, Ministerio de Educación y Ciencia (España), Ministerio de Ciencia e Innovación (España), Comunidad de Madrid, European Commission, Universidad Autónoma de Madrid (UAM)-Universidad Autónoma de Madrid (UAM), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Magnétisme et Supraconductivité (NEEL - MagSup)
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2013, 87 (13), pp.134502. ⟨10.1103/PhysRevB.87.134502⟩
Biblos-e Archivo. Repositorio Institucional de la UAM
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Digital.CSIC. Repositorio Institucional del CSIC
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 87 (13), pp.134502. ⟨10.1103/PhysRevB.87.134502⟩
ISSN: 1098-0121
1550-235X
DOI: 10.1103/PhysRevB.87.134502⟩
Popis: We present measurements of the superconducting critical temperature T c and upper critical field Hc2 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 Hc2(T) of 2H-NbS2 varies considerably when increasing the pressure. At low pressures, Hc2(0) decreases, and at higher pressures both Tc and Hc2(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.
This work was supported by Spanish MINECO (Consolider-Ingenio CSD2007-00010 and CSD2009-00013 programs, SAB2009-0057, FIS2011-23488, and MAT2011-27470-C02-02), by the Comunidad de Madrid through program Nanobiomagnet, and by NanoSc-COST program.
Databáze: OpenAIRE
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