Experimental evidence of quantum tunnelling in TlBaCaCuO
- 14 December 1992
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 4 (50) , 10341-10346
- https://doi.org/10.1088/0953-8984/4/50/021
Abstract
Experimental evidence of a crossover from a thermally to a non-thermally activated flux motion is reported for TlBaCaCuO. It was obtained by measuring the time decay of both zero-field-cooled and remanent magnetization. The measured relaxation rates at low temperature are in good agreement with the prediction of the quantum collective creep theory for anisotropic superconductors in the low-field-single-vortex pinning.Keywords
This publication has 29 references indexed in Scilit:
- Quantum tunnelling effects in Fe/Sm multilayersJournal of Physics: Condensed Matter, 1992
- Time dependent phenomena at low temperatures in SmCo multilayers: quantum nucleation phenomenaPhysics Letters A, 1992
- Quantum tunneling of magnetization in multilayer systemsJournal of Magnetism and Magnetic Materials, 1992
- Flux motion by quantum tunnelingPhysica C: Superconductivity and its Applications, 1991
- Low-temperature magnetic relaxation in : Evidence for quantum tunneling of vorticesPhysical Review B, 1991
- Non-activated magnetic relaxation in a high- Tc superconductorNature, 1990
- Relaxation effects in highTcsuperconductorsPhysica Scripta, 1988
- Low-field magnetic relaxation effects in high-superconductors Sr-La-Cu-O and Ba-La-Cu-OPhysical Review B, 1987
- Measurements of Macroscopic Quantum Tunneling out of the Zero-Voltage State of a Current-Biased Josephson JunctionPhysical Review Letters, 1985
- Weakly Pinned Fröhlich Charge-Density-Wave Condensates: A New, Nonlinear, Current-Carrying Elementary ExcitationPhysical Review Letters, 1976