Local time-dependent magnetization of superconducting films in the presence of a transport current
M. McElfresh, E. Zeldov, John R. Clem, M. Darwin, J. Deak, L. Hou
DOI 10.1103/PhysRevB.51.9111 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The time dependence of the normal component of the local flux density Bz(t) was studied using a small Hall sensor placed on a thin film of the high-temperature superconductor YBa2Cu3O7. Following the preparation of the critical state, the time dependence of Bz(t) was studied before, during, and after the application of both positive and negative transport currents. Initial application of current results in an increased relaxation rate. A simple approximation for the relaxation behavior was used to calculate the spatial dependence of the current and flux densities as a function of time using a modified Bean critical-state model that incorporates demagnetization effects in superconducting films. With this model it was possible to account for most of the observed behavior.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | onset |
Similar papers
Observation of Magnetic Flux Generated Spontaneously During a Rapid Quench of Superconducting Films
similarity 0.95A. Maniv et al.
Source status unknown — claims are unverified
Doping-dependent nonlinear Meissner effect and spontaneous currents in high-Tc superconductors
similarity 0.95Sheng-Chiang Lee et al.
Source status unknown — claims are unverified
Zero-field superconducting phase transition obscured by finite-size effects in thick YBa2Cu3O7−δ films
similarity 0.95M. C. Sullivan et al.
Source status unknown — claims are unverified
Reduction of the magnetization decay rate in high-Tc superconductors
similarity 0.95B. M. Lairson et al.
Source status unknown — claims are unverified
Metallic and superconducting surfaces of YBa2Cu3O7 probed by electrostatic charge modulation of epitaxial films
similarity 0.94A. T. Fiory et al.
Source status unknown — claims are unverified
Temperature dependence of the lower critical field of high-Tc superconducting crystals near Tc
similarity 0.94F. Mrowka et al.
Source status unknown — claims are unverified