Observation of Paramagnetic Meissner Effect in Niobium Disks
David J. Thompson, M. S. M. Minhaj, L. E. Wenger, J. T. Chen
DOI 10.1103/PhysRevLett.75.529 · Physical Review Letters
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
For several superconducting niobium disks, the dc field-cooled magnetization (FCM) shows a paramagnetic response below their superconducting transition temperature Tc≈9.2K when the applied magnetic filed is normal to the disk. At 8.6 K, the FCM reaches a maximum in fields of 5 to 10 Oe and becomes diamagnetic for fields larger than 20 Oe. This FCM behavior is qualitatively similar to the paramagnetic Meissner effect (PME) recently observed in high- Tc cuprate superconductors. Various surface treatments to the Nb disks result in changes in both the zero-field-cooled magnetization and the FCM, including the disappearance of the PME.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.2 | Pressure not reported | onset |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Inducing the paramagnetic Meissner effect in Nb disks by surface ion implantation
similarity 0.97David J. Thompson et al.
Source status unknown — claims are unverified
Detailed investigation of the superconducting transition of niobium disks exhibiting the paramagnetic Meissner effect
similarity 0.97L. Půst et al.
Source status unknown — claims are unverified
Comment on ``Paramagnetic Meissner effect in Nb''
similarity 0.97T. M. Rice & M. Sigrist
Source status unknown — claims are unverified
Time dependence of the paramagnetic Meissner effect: Comparison between model calculations and experiments
similarity 0.96J. Magnusson et al.
Source status unknown — claims are unverified
Phenomenological theory of the paramagnetic Meissner effect
similarity 0.96Daniel Domínguez et al.
Source status unknown — claims are unverified
Paramagnetic moment in field-cooled superconducting plates: Paramagnetic Meissner effect
similarity 0.96A. E. Koshelev & A. I. Larkin
Source status unknown — claims are unverified