Investigations of the magnetic transport properties of normal metallic films under the non-uniform magnetic field

✍ Scribed by B. Shinozaki; K. Sakae; S. Inada; K. Yamada; T. Kawaguti

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 84 KB
• Volume: 18
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(02)00990-6

✦ Synopsis

We have measured the magnetoconductance (MC) deÿned by = (H ) -(0) of two-dimensional Bi ÿlms subjected to a periodic magnetic ÿeld H , which is produced by a superconducting intermediate state of thick Pb ÿlm placed in the immediate vicinity of metal ÿlms. Non-linear H dependence of MC has been observed at low magnetic ÿelds. This is not expected from a simple magnetic distribution of normal (H = Hc) and superconducting (H = 0) domain structure in the intermediate state. For specimen of which Pb ÿlm has sharp edges, MC shows the step-like structure. This indicates the strong surface ux pinning e ect. On the other hand, in the case of broad edge of Pb ÿlm, MC shows the oscillation behavior.