Interlayer tunneling in a non-Fermi-liquid metal

Details Interlayer tunneling in a non-Fermi-liquid metal Interlayer tunneling in a non-Fermi-liquid metal

1995-08-14

arxiv.org/abs/cond-mat/9508050v1

Physics

Condensed Matter

13 pages, latex, one uuencoded postscript figure

Scientific paper

10.1103/PhysRevB.53.R11964

We study the effect of interlayer tunneling in the gauge theory describing a quasi-two-dimensional paramagnetic metal close to a second-order or weakly first-order antiferromagnetic phase boundary. In that theory, two species of fermions have opposite (rather than equal) charges with respect to the gauge field. We find that single-particle interlayer tunneling is suppressed at low energies. The effect of pair tunneling is analyzed within the $(3-d)$ expansion. The resulting phase diagram has superconducting and non-Fermi-liquid normal phases, and so is compatible with that of the copper-oxide superconductors.

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