Observability of quantum phase fluctuations in cuprate superconductors

Details Observability of quantum phase fluctuations in cuprate superconductors Observability of quantum phase fluctuations in cuprate superconductors

2000-06-20

arxiv.org/abs/cond-mat/0006290v3

Physics

Condensed Matter

Superconductivity

RevTex, 4 pages, 3 eps figures; minor changes

Scientific paper

10.1103/PhysRevLett.86.3875

We study the order parameter phase fluctuation effects in cuprate superconductors near T=0, using a quasi-two-dimensional d-wave BCS model. An effective phason theory is obtained which is used to estimate the strength of the fluctuations, the fluctuation correction to the in-plane penetration depth, and the pair-field susceptibility. We find that while the phase fluctuation effects are difficult to observe in the renormalization of the superfluid phase stiffness, they may be observed in a pair tunneling experiment which measures the pair-field susceptibility.

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