scholarly journals Upper critical field, penetration depth, and depinning frequency of the high-temperature superconductorLaFeAsO0.9F0.1studied by microwave surface impedance

2008 ◽  
Vol 78 (1) ◽  
Author(s):  
A. Narduzzo ◽  
M. S. Grbić ◽  
M. Požek ◽  
A. Dulčić ◽  
D. Paar ◽  
...  
Keyword(s):  
High Temperature ◽  
Penetration Depth ◽  
Critical Field ◽  
Surface Impedance ◽  
Upper Critical Field ◽  
Microwave Surface Impedance ◽  
Field Penetration Depth ◽  
Field Penetration

Upper critical field, penetration depth, and GL parameter of Tl-2223 single crystals

1994 ◽  
Vol 235-240 ◽  
pp. 1845-1846 ◽  
Author(s):  
G. Brandstätter ◽  
F.M. Sauerzopf ◽  
H.W. Weber ◽  
F. Ladenberger ◽  
E. Schwarzmann
Keyword(s):  
Single Crystals ◽  
Penetration Depth ◽  
Critical Field ◽  
Upper Critical Field ◽  
Field Penetration Depth ◽  
Field Penetration

scholarly journals The Gap and the Upper Critical FieldHc2as Function of Doping for High-TcCuprates

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
S. Orozco ◽  
R. M. Méndez-Moreno ◽  
M. A. Ortiz
Keyword(s):  
High Temperature ◽  
Critical Field ◽  
Energy Gap ◽  
High Temperature Superconductors ◽  
Upper Critical Field ◽  
Superconducting Gap ◽  
Phonon Interaction ◽  
As Doping ◽  
Electron Phonon Interaction ◽  
Wave Symmetry

The relation between thed-wave superconducting gapΔ0and the specific heat obtained with the Volovik effect is used to determine the upper critical fieldHc2as doping function, for high-temperature superconductors. A two-components model withd-wave symmetry, within the BCS framework, is introduced to describe the superconducting state. Generalized Fermi surface topologies are used in order to increase the density of states at the Fermi level, allowing the high-Tcvalues observed. The electron-phonon interaction is considered the most relevant mechanism for the high-Tccuprates, where the available phonon energy is provided by the half-breathing modes. The energy gap valuesΔ0calculated with this model are introduced to describe the variation of the upper critical fieldHc2as function of doping, forLa2-xSrxCuO4.

scholarly journals Pauli-limit upper critical field of high-temperature superconductor La1.84Sr0.16CuO4

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Daisuke Nakamura ◽  
Tadashi Adachi ◽  
Keisuke Omori ◽  
Yoji Koike ◽  
Shojiro Takeyama
Keyword(s):  
High Temperature ◽  
Critical Field ◽  
High Temperature Superconductor ◽  
Upper Critical Field ◽  
Small Contribution ◽  
Spin Orbit Coupling ◽  
Temperature Dependent ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

AbstractThe upper critical field of a cuprate high-temperature superconductor, La1.84Sr0.16CuO4, was investigated by high-frequency self-resonant contactless electrical conductivity measurements in magnetic fields up to 102 T. An irreversible transition was observed at 85 T (T = 4.2 K), defined as the upper critical field. The temperature-dependent upper critical field was argued on the basis of the Werthamer-Helfand-Hohenberg theory. The Pauli-limiting pair-breaking process with a small contribution of the spin-orbit coupling explained the first-order phase transition exhibiting a hysteresis observed at low temperatures.

Muon depolarization and magnetic field penetration depth in superconductingGdBa2Cu3Ox

1988 ◽  
Vol 37 (16) ◽  
pp. 9401-9404 ◽  
Author(s):  
D. W. Cooke ◽  
R. L. Hutson ◽  
R. S. Kwok ◽  
M. Maez ◽  
H. Rempp ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Penetration Depth ◽  
Magnetic Field Penetration Depth ◽  
Magnetic Field Penetration ◽  
Field Penetration Depth ◽  
Field Penetration
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