Ferromagnetic thickness dependence of superconducting transition temperature in a superconductor/ferromagnet bilayer system with an inhomogeneous exchange field

2014 ◽  
Vol 502 ◽  
pp. 41-46 ◽  
Author(s):  
W. Booniad ◽  
P. Udomsamuthirun
Keyword(s):  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
Thickness Dependence ◽  
Exchange Field ◽  
Superconducting Transition ◽  
Bilayer System ◽  
Inhomogeneous Exchange

Thickness dependence of the superconducting transition temperature of YBCO

1993 ◽  
Vol 175 (3-4) ◽  
pp. 241-245 ◽  
Author(s):  
I.N Chan ◽  
D.C Vier ◽  
O Nakamura ◽  
J Hasen ◽  
J Guimpel ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
Thickness Dependence ◽  
Superconducting Transition

scholarly journals Thickness Dependence of Superconductivity in Layered Topological Superconductor β-PdBi2

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2826
Author(s):  
Huijie Li ◽  
Huanhuan Wang ◽  
Wenshuai Gao ◽  
Zheng Chen ◽  
Yuyan Han ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Transport Properties ◽  
Systematic Study ◽  
Superconducting Transition Temperature ◽  
Critical Thickness ◽  
Thickness Dependence ◽  
Superconducting Transition ◽  
Topological Superconductor ◽  
Physical Mechanisms

We report a systematic study on the thickness-dependent superconductivity and transport properties in exfoliated layered topological superconductor β-PdBi2. The superconducting transition temperature Tc is found to decrease with the decreasing thickness. Below a critical thickness of 45 nm, the superconductivity is suppressed, but followed by an abrupt resistance jump near Tc, which is in opposite to the behavior in a superconductor. We attribute suppressed Tc to the enhanced disorder as the thickness decreases. The possible physical mechanisms were discussed for the origination of sharply increased resistance in thinner β-PdBi2 samples.

scholarly journals Enhancing Superconductivity of the Nonmagnetic Quasiskutterudites by Atomic Disorder

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5830
Author(s):  
Andrzej Ślebarski ◽  
Maciej M. Maśka
Keyword(s):  
High Temperature ◽  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
High Temperature Superconductors ◽  
Superconducting Phase ◽  
Length Scale ◽  
Superconducting Transition ◽  
Atomic Disorder ◽  
Strong Inhomogeneity ◽  
Related Compounds

We investigated the effect of enhancement of superconducting transition temperature Tc by nonmagnetic atom disorder in the series of filled skutterudite-related compounds (La3M4Sn13, Ca3Rh4Sn13, Y5Rh6Sn18, Lu5Rh6Sn18; M= Co, Ru, Rh), where the atomic disorder is generated by various defects or doping. We have shown that the disorder on the coherence length scale ξ in these nonmagnetic quasiskutterudite superconductors additionally generates a non-homogeneous, high-temperature superconducting phase with Tc⋆>Tc (dilute disorder scenario), while the strong fluctuations of stoichiometry due to increasing doping can rapidly increase the superconducting transition temperature of the sample even to the value of Tc⋆∼2Tc (dense disorder leading to strong inhomogeneity). This phenomenon seems to be characteristic of high-temperature superconductors and superconducting heavy fermions, and recently have received renewed attention. We experimentally documented the stronger lattice stiffening of the inhomogeneous superconducting phase Tc⋆ in respect to the bulk Tc one and proposed a model that explains the Tc⋆>Tc behavior in the series of nonmagnetic skutterudite-related compounds.

Sign in / Sign up

Export Citation Format

Share Document