Condensed Matter Physics Seminar

Thursday, October 14, 1999, 2 p.m.
Plant Sciences Building, Room 1130

Precise measurements of the magnetic penetration depth in unconventional superconductors

Ruslan Prozorov

(Loomis Laboratory of Physics, University of Illinois at Urbana-Champaign)

Abstract: A tunnel diode driven RF resonator was used for precise measurements of the magnetic penetration depth at temperatures down to 0.4 K and in magnetic fields up to 0.3 Tesla. Measurements in both BEDT organic superconductors and electron-doped Nd_1.85Ce_0.15CuO_4-x have revealed new aspects of the symmetry of the order parameter. Measurements of the field-dependent penetration depth in BiSrCaCuO-2212 indicate a thermally induced depinning transition at low temperatures.

Host: Richard Greene

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