Predicted giant magnetic moment on non-{n0m} surfaces of d-wave superconductors
Abstract
It has been noted that the sizable areal density of midgap states which must exist on any non-{n0m} surface of a d-wave superconductor can lead to a giant magnetic moment. Here we show that this effect is observable, and discuss two precise ways to observe it: (i) by directly measuring magnetic moment in a system with a large density of internal {110} surfaces, or (ii) by performing spin-polarized tunneling on a {110} surface. In both cases, a sufficiently large magnetic field should be applied in the [1 (1) over bar 0] direction. Observing these predictions in high-T(c) superconductors can provide a strong confirmation of the d-wave scenario for such materials. [S0163-1829(99)50942-9].
Description
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HIGH-TEMPERATURE SUPERCONDUCTORSBIAS CONDUCTANCE PEAK
TUNNELING
SPECTROSCOPY
ANDREEV REFLECTION
PENETRATION DEPTH
SINGLE-CRYSTALS
MIDGAP STATES
JUNCTIONS
FERROMAGNET
SYMMETRY
Physics