Superconductivity of small metallic particles. I

✍ Scribed by Arisato Kawabata

• Publisher: Springer US
• Year: 1980
• Tongue: English
• Weight: 459 KB
• Volume: 38-38
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00115275

✦ Synopsis

The ground state energy and orbital magnetic susceptibility of a small-particle superconductor are calculated with the use of perturbation theory, which is expected to give correct results in the limit of small particle size, i.e., when the average one-electron energy level spacing 8 is much larger than the energy gap A of the bulk metal. The method is applicable up to particles of intermediate size for which A/6 = 1/4-1/2 (e.g., aluminum particles o[ radius 25-30 ~). The magnetic susceptibility does not undergo any drastic change in the region A ~ 8 when the particle size is varied, and quantum size effects do not show up in the susceptibility.