Superfluid phase stiffness in electron doped superconducting Gd-123

Das, Payel; Ghosh, Ajay

doi:10.1016/j.physc.2018.01.020

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Cited by 16 publications

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“…Typical dimension of the bar-shaped sample is 6.5×2.5×0.5 mm 3 . The resistivity (ρ) as a function of the temperature has been measured by using the standard four-probe method with the help of a cryogenerator [35,36]. At constant T below the onset T c , the measurements of IV have been carried around the phase transition region.…”

Section: Methodsmentioning

confidence: 99%

Nonmagnetic scattering induced suppression of superfluid density in Bi-2212

Sk¹,

Rakshit²,

Ghosh³

2022

Phys. Scr.

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Nonlinear current-voltage (IV) characteristics of Bi-2212 observed in the presence of the nonmagnetic impurity have been explained incorporating the idea of Berezinskii-Kosterlitz - Thouless (BKT). An exponent (η) is extracted as a function of temperature (T) for several Bi2-xSr2 CaCu2-x ZnxO8+δ (Bi-2212) superconducting samples. Within the framework of the Ambegaokar-Halperin-Nelson-Siggia (AHNS) theory we have extracted the superfluid phase stiffness (SPS) as a function of T. A scaling between the SPS and critical temperature is observed. Strong suppression by the nonmagnetic impurity has been explained using the idea of localized phase fluctuations in the superconducting planes.

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Section: Methodsmentioning

confidence: 99%