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Influence of Gap Extrema on the Tunneling Conductance Near an Impurity in an Anisotropic Superconductor
J. M. Byers, M. E. Flatte', D. J. Scalapino
Changes: figures added in postscript form, Eq. (7) and various typos corrected. We examine the effect of an impurity on the nearby tunneling conductance in an anisotropically-gappe…
Subharmonic Generation in Quantum Systems
Martin Holthaus, Michael E. Flatte'
We show how the classical-quantum correspondence permits long-lived subharmonic motion in a quantum system driven by a periodic force. Exponentially small deviations from exact sub…
Method for Measuring the Momentum-Dependent Relative Phase of the Superconducting Gap of High-Temperature Superconductors
M. E. Flatte', S. Quinlan, D. J. Scalapino
The phase variation of the superconducting gap over the (normal) Fermi surface of the high-temperature superconductors remains a significant unresolved question. Is the phase of th…
Lower Bound on the Energy Gap at Precise Locations on the Bi_2Sr_2CaCu_2O_8 Fermi Surface
Michael E. Flatte
Recent inelastic-neutron-scattering measurements of a low-energy phonon in Bi_2Sr_2CaCu_2O_8 provide enough information to place a lower bound on the energy gap magnitude at precis…