Signatures for the second critical point in the phase diagram of a superconducting ring
Jorge Berger, Jacob Rubinstein
DOI 10.1103/PhysRevB.56.5124 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the Little-Parks effect for families of mesoscopic loops with highly nonuniform thickness, using a recently developed formalism which predicts a phase diagram with two critical points at half-integer number of magnetic flux quanta. The Euler-Lagrange equation can be integrated analytically, and this feature provides an easy way to locate the second critical point and evaluate the derivative of the supercurrent. The derivative of the supercurrent (ac susceptibility) has been recently measured. Our results and experiments share the same qualitative features.
Similar papers
Critical temperature oscillations in magnetically coupled superconducting mesoscopic loops
similarity 0.90M. Morelle et al.
Source status unknown — claims are unverified
Thermal signatures of the Little-Parks effect in the heat capacity of mesoscopic superconducting rings
similarity 0.90Florian R. Ong et al.
Source status unknown — claims are unverified
Little-Parks oscillations in hybrid ferromagnet–superconductor systems
similarity 0.90A. V. Samokhvalov et al.
Source status unknown — claims are unverified
Little-Parks effect in a superconducting loop with a magnetic dot
similarity 0.90D. S. Golubović et al.
Source status unknown — claims are unverified
Little-Parks Oscillations in Hybrid Ferromagnet-Superconductor Systems
similarity 0.89A. V. Samokhvalov et al. · 2009 · arXiv:0902.4860
Source status unknown — claims are unverified
Little-Parks effect and multiquanta vortices in a hybrid superconductor--ferromagnet system
similarity 0.89A. Yu. Aladyshkin et al. · 2003 · arXiv:cond-mat/0305551
Source status unknown — claims are unverified