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Theses/Dissertations

1995

Physics

Condensed matter physics

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Full-Text Articles in Engineering

Vortex Lattice Melting In An Anisotropic Type Ii Superconductor , John Anton Fendrich Jan 1995

Vortex Lattice Melting In An Anisotropic Type Ii Superconductor , John Anton Fendrich

Retrospective Theses and Dissertations

The flux line lattice in superconducting single crystals of YBa [subscript]2Cu[subscript]3O[subscript]7-[delta] is shown to undergo a very abrupt melting transition as the temperature and field approach the normal state. The sharpest transitions from the vortex solid to liquid phase, as seen in resistivity measurements, are of the order of 10mK in a temperature of 85K and of the order of 10 Oe in a field of 6T. The discontinuity in the resistivity associated with vortex lattice melting is asymmetrically hysteretic with applied field in clean crystals. The melting transition width for decreasing applied magnetic ...