Image of the energy gap anisotropy in the vibrational spectrum of a high-temperature superconductor
- 1 February 1993
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (5) , 658-661
- https://doi.org/10.1103/physrevlett.70.658
Abstract
We present a new method of determining the anisotropy of the gap function in layered high-Tc superconductors. Careful inelastic neutron scattering measurements at low temperature of the phonon dispersion curves in the (100) direction in La_(1.85)Sr_(.15)CuO_4 would determine whether the gap is predominately s-wave or d-wave. We also propose an experiment to determine the gap at each point on a quasi-two-dimensional Fermi surface.Comment: 12 pages + 2 figures (includedKeywords
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This publication has 20 references indexed in Scilit:
- Constraints on the temperature dependence of the magnetic penetration depth of superconducting from measurements of the low-temperature specific heatPhysical Review B, 1992
- Enhanced ultrasonic attenuation of Tl-Ca-Ba-Cu-O at the superconducting transitionPhysical Review B, 1990
- Reproducible tunneling data on chemically etched single crystals ofPhysical Review Letters, 1989
- Phonon anomalies and range of superconducting energy gaps from infrared studies ofPhysical Review B, 1989
- Ultrasonic-attenuation measurements in single-phasedPhysical Review B, 1988
- Evidence for two pairing energies from nuclear spin-lattice relaxation in superconductingPhysical Review Letters, 1987
- -wave pairing near a spin-density-wave instabilityPhysical Review B, 1986
- Spin-fluctuation-mediated even-parity pairing in heavy-fermion superconductorsPhysical Review B, 1986
- A theoretical description of the new phases of liquidReviews of Modern Physics, 1975
- Theory of SuperconductivityPhysical Review B, 1957