Pressure Study of BiS2-Based Superconductors Bi4O4S3and La(O,F)BiS2
نویسندگان
چکیده
منابع مشابه
Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors
Superconductivity within layered crystal structures has attracted sustained interest among condensed matter community, primarily due to their exotic superconducting properties. EuBiS2F is a newly discovered member in the BiS2-based superconducting family, which shows superconductivity at 0.3 K without extrinsic doping. With 50 at.% Ce substitution for Eu, superconductivity is enhanced with Tc i...
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G. B. Martins,1,* A. Moreo,2 and E. Dagotto2 1Department of Physics, Oakland University, Rochester, Michigan 48309, USA 2Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA (Received 1 December 2012; revised manuscript received 4 January 2013; p...
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Pressure effects on Ca60Al40 metallic glass superconductors
Theoretical computation of the pressure dependence superconducting state parameters of binary Ca60Al40 is reported using model potential formalism. Explicit expressions have been derived for the volume dependence of the electron–phonon coupling strength λ and the Coulomb pseudopotential μ* considering the variation of Fermi momentum KF and Debye temperature ӨD with volume. Well known Ashcroft’s...
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A mean-field treatment is presented of a square lattice two-orbital-model for [Formula: see text] taking into account intra- and inter-orbital superconductivity. A rich phase diagram involving both types of superconductivity is presented as a function of the ratio between the couplings of electrons in the same and different orbitals ([Formula: see text]) and electron doping x. With the help of ...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2012
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.81.103702