Field-dependent microwave absorption in high-Tc superconductors
S. H. Glarum, J. H. Marshall, L. F. Schneemeyer
DOI 10.1103/PhysRevB.37.7491 · 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
Substantial field-dependent microwave absorption is found in superconducting materials of the YBa2Cu3O7 class. Abrupt changes occur over a 20-G range at zero field which are qualitatively different for polycrystalline and single-crystal materials. A strong hysteresis in polycrystalline samples is quenched by modulation fields of 0.2 Gpp. Formally the dissipative processes observed may be described in terms of flux relaxation, but the underlying physical mechanisms remain unresolved. As measurements on 100 μg specimens can be performed in a few seconds, this property may prove useful for material characterization.
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. | 93 | Pressure not reported | onset |
| YBa2Cu3-xAlxO7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | onset |
Similar papers
Excitonic absorption and superconductivity in YBa2Cu3O7−y
similarity 0.97K. Kamarás et al.
Source status unknown — claims are unverified
Low-field microwave absorption in the superconducting copper oxides
similarity 0.97K. W. Blazey et al.
Source status unknown — claims are unverified
ac susceptibility near the superconducting transition in polycrystalline YBa2Cu3O7−δ
similarity 0.96W. M. Tiernan & R. B. Hallock
Source status unknown — claims are unverified
Microwave and ac power absorption and ac susceptibility measurements of the high-Tc superconducting Tl-Ba-Ca-Cu-O system near zero field
similarity 0.96A. C. Bódi
Source status unknown — claims are unverified
Low-field dependence of the microwave absorption in superconducting YBa2Cu3O7−x near Tc
similarity 0.96R. Karim et al.
Source status unknown — claims are unverified
Microwave propagation through superconductor-polymer composites
similarity 0.96M. Golosovsky et al.
Source status unknown — claims are unverified