Effect of Phase Fluctuations on the Low-Temperature Penetration Depth of High- Tc Superconductors

Eric Roddick; David Stroud

doi:10.1103/PhysRevLett.74.1430

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Effect of Phase Fluctuations on the Low-Temperature Penetration Depth of High- Tc Superconductors

Eric Roddick, David Stroud

DOI 10.1103/PhysRevLett.74.1430 · Physical Review Letters

T1

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Abstract

We describe a simple model to estimate the effects of order parameter phase fluctuations on the penetration depth λ(T) of high- Tc superconductors. When treated classically, such fluctuations are found to produce a linear temperature dependence of λ(T), which may be comparable to the experimentally observed magnitude. This dependence persists when the combined effects of charging interactions and dissipation are included in the model. Hence, such a dependence may not be a unique signature of a superconductor with line nodes at the Fermi surface.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nd2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown