Publication

Relaxation time of the Cooper pairs near T-c in cuprate superconductors

Davor Pavuna
1999
Journal Articles

Abstract

It is first shown that the thermal fluctuation effects on the transport and on the thermodynamic observables above the superconducting transition may provide, when they are analyzed simultaneously and consistently, a powerful tool to access the relaxation time, tau(0), of the Cooper pairs with wave vector k = 0 in high-temperature cuprate superconductors (HTSC). Then, Ne apply this procedure to optimally doped YBa2Cu3O7-delta (Y-123) crystals. It is found that in this HTSC tau(0) follows, within 20% accuracy, the BCS temperature behaviour and amplitude given by tau(0) = pi h/[8k(B)(T - T-c0)].

Official source

https://infoscience.epfl.ch/entities/publication/b6473db9-7efd-4a2c-955e-320d1db1f0e8

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Davor Pavuna
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b6473db9-7efd-4a2c-955e-320d1db1f0e8

About this result

Related concepts (32)

Superconductivity

Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic fields are expelled from the material. Any material exhibiting these properties is a superconductor. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, even down to near absolute zero, a superconductor has a characteristic critical temperature below which the resistance drops abruptly to zero.

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