Abstract
A free-energy expression for a pure superconductor is derived microscopically which includes effects of a nonlocal order parameter. In the presence of strong field the simple transformation q→→q→ +2eA→c is no longer valid. Using this free energy, fluctuation-induced diamagnetism of a superconductor above Tc is calculated. The resulting universal behavior for pure superconductors is in good agreement with the experiment of Gollub, Beasley, and Tinkham.
| Original language | English |
|---|---|
| Pages (from-to) | 1537-1541 |
| Number of pages | 5 |
| Journal | Physical Review Letters |
| Volume | 26 |
| Issue number | 25 |
| DOIs | |
| State | Published - 1971 |