A fluctuation-dissipation relation and its applications to thermodynamic fluctuations in superconducting cylinders |
| |
| Authors: | M C Leung |
| |
| Institution: | (1) Department of Physics, University of British Columbia, Vancouver, British Columbia;(2) Present address: Department of Physics, University of Saskatchewan, Regina, Saskatchewan, Canada |
| |
| Abstract: | Modifying slightly Kubo's formulation of perturbation theory to take care of the fact that generalized susceptibility may not be zero at infinite frequency, we establish, in the classical limit, a general relation between covariance and generalized susceptibility. The relation is then applied to evaluate the covariances of the magnetic flux, currents, and magnetization of a superconducting cylinder. Expressions for the spectra of magnetic flux and magnetization are also obtained. |
| |
| Keywords: | Linear response generalized susceptibility covariance spectrum relaxation superconducting cylinder magnetic flux current magnetization |
| 本文献已被 SpringerLink 等数据库收录！ |
|
