Title
|
|
|
|
Calorimetric properties of mesoscopic superconducting disks, rings, and cylinders
| |
Author
|
|
|
|
| |
Abstract
|
|
|
|
The thermal signatures of superconductivity in mesoscopic disks, rings and cylinders are calculated within the Ginzburg-Landau theory. In an applied perpendicular magnetic field H the heat capacity of mesoscopic samples shows a strong dependence on the realized vortex state; discontinuities are found at the critical field for different vorticities, as well as at the superconducting-to-normal state transition. The same applies to the intermediate state of type-I superconductors. Even the subtle changes in the fluxoid distribution inside the sample leave clear signatures on heat capacity, which is particularly useful for fully three-dimensional samples whose interior is often inaccessible by magnetometry. The heat-capacity jump ΔC(H) at the critical temperature exhibits quasiperiodic modulations as a function of magnetic field. In mesoscopic superconducting rings, these oscillations provide calorimetric verification of the Little-Parks effect. |
| |
Language
|
|
|
|
English
| |
Source (journal)
|
|
|
|
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
| |
Publication
|
|
|
|
Lancaster, Pa
:
2010
| |
ISSN
|
|
|
|
1098-0121
[print]
1550-235X
[online]
| |
Volume/pages
|
|
|
|
81
:6
(2010)
, p. 064501,1-064501,10
| |
ISI
|
|
|
|
000274998100091
| |
Full text (Publisher's DOI)
|
|
|
|
| |
Full text (open access)
|
|
|
|
| |
|