Magnetic relaxation in high-temperature superconductors
Y Yeshurun, AP Malozemoff, A Shaulov - Reviews of Modern Physics, 1996 - APS
We review experimental studies of the time decay of the nonequilibrium magnetization in
high-temperature superconductors, a phenomenon known as magnetic relaxation. This …
high-temperature superconductors, a phenomenon known as magnetic relaxation. This …
Physics of the granular state
HM Jaeger, SR Nagel - Science, 1992 - science.org
Granular materials display a variety of behaviors that are in many ways different from those
of other substances. They cannot be easily classified as either solids or liquids. This has …
of other substances. They cannot be easily classified as either solids or liquids. This has …
Giant flux creep and irreversibility in an Y-Ba-Cu-O crystal: an alternative to the superconducting-glass model
Y Yeshurun, AP Malozemoff - Physical review letters, 1988 - APS
We report strong, anisotropic magnetic relaxation of the field-cooled and zero-field-cooled
magnetization along the principal axes of an Y-Ba-Cu-O single crystal and interpret it with a …
magnetization along the principal axes of an Y-Ba-Cu-O single crystal and interpret it with a …
Dependence of flux-creep activation energy upon current density in grain-aligned
MP Maley, JO Willis, H Lessure, ME McHenry - Physical Review B, 1990 - APS
We have investigated magnetic relaxation on a grain-aligned sample of YBa 2 Cu 3 O 7− x
powder embedded in epoxy with the magnetic field along the c axis. Through a thermal …
powder embedded in epoxy with the magnetic field along the c axis. Through a thermal …
Thermal fluctuations of vortex lines, pinning, and creep in high- superconductors
MV Feigel'man, VM Vinokur - Physical Review B, 1990 - APS
Thermal fluctuations of vortex lines are shown to be capable of strongly reducing the value
of the critical current in the mixed state of high-T c superconductors. The theory of pinning in …
of the critical current in the mixed state of high-T c superconductors. The theory of pinning in …
Distribution of activation energies for thermally activated flux motion in high- superconductors: An inversion scheme
CW Hagen, R Griessen - Physical review letters, 1989 - APS
Within a thermally activated flux-motion model we derive an exact inversion scheme which
makes it possible to calculate the distribution m (E*) of activation energies E* for flux motion …
makes it possible to calculate the distribution m (E*) of activation energies E* for flux motion …
Flux pinning and dissipation in high temperature oxide superconductors
ME McHenry, RA Sutton - Progress in Materials Science, 1994 - Elsevier
3.5. 1. Bean and critical state models for anisotropic superconductors 3.5. 2. The self-
organized critical state 3.5. 3. Types of pinning 3.5. 4. Elementary pinning force for HTSC …
organized critical state 3.5. 3. Types of pinning 3.5. 4. Elementary pinning force for HTSC …
Magnetic field and temperature dependence of magnetic flux creep in c-axis-oriented powder
Y Xu, M Suenaga, AR Moodenbaugh, DO Welch - Physical Review B, 1989 - APS
Creep of magnetic flux lines in a c-axis-oriented powder specimen of YBa 2 Cu 3 O 7 was
measured at temperatures of 5< T< 50 K for fields in the range 0.1< H< 4.0 T. Under most …
measured at temperatures of 5< T< 50 K for fields in the range 0.1< H< 4.0 T. Under most …
Distribution of flux-pinning energies in and from flux noise
The spectral density of the magnetic flux noise measured in high-temperature
superconductors in low magnetic fields scales approximately as the inverse of the frequency …
superconductors in low magnetic fields scales approximately as the inverse of the frequency …
Memory effects in a superconducting y-ba-cu-o single crystal: A similarity to spin-glasses
We report on memory effects observed in the time dependence of the magnetization M (T, H)
of a superconducting Y-Ba-Cu-O single crystal. As in spin-glasses, the decay rate S= dM d ln …
of a superconducting Y-Ba-Cu-O single crystal. As in spin-glasses, the decay rate S= dM d ln …