Uniaxial Strain Orientation Dependence of Superconducting Transition Temperature (Tc) and Critical Superconducting Pressure (Pc) in β-(BDA-TTP)2I3

2011 ◽  
Vol 133 (49) ◽  
pp. 19590-19593 ◽  
Author(s):  
Koichi Kikuchi ◽  
Takayuki Isono ◽  
Masayuki Kojima ◽  
Haruo Yoshimoto ◽  
Takeshi Kodama ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
Orientation Dependence ◽  
Uniaxial Strain ◽  
Superconducting Transition

Effect of Uniaxial Strain on the Superconducting Transition Temperature in thin YBa2Cu3O7 Film

1987 ◽  
Vol 99 ◽  
Author(s):  
S. I. Park ◽  
M. R. Scheuermann ◽  
C. C. Chi ◽  
C. C. Tsuei
Keyword(s):  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
Tensile Strain ◽  
Uniaxial Strain ◽  
Logarithmic Strain ◽  
Superconducting Transition ◽  
A Value ◽  
Additional Strain ◽  
Strain Derivative ◽  
Compressional Strain

ABSTRACTThe effect of uniaxial strain e on superconducting transition temperature Tc of thin YBa2Cu3O7 film is presented. The value of TC increases linearly with compressional strain with a slope of -275K/e. Under tensile strain, Tc initially decreases to a value ∼ 0.3K below the zero-strain value and then remains constant with additional strain. In compression, the logarithmic strain derivative of Tc, (1/Tc)(dTc/de), is -3 per unit strain which is slightly less than 4–6 per unit strain observed in conventional superconductors.

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.

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