Critical temperature of superconducting bilayers: Theory and experiment

Nonmonotonic critical temperature in superconductorÕferromagnet bilayers

The critical temperature Tc of a superconductor/ferromagnet ~SF! bilayer can exhibit nonmonotonic dependence on the thickness d f of the F layer. SF systems have been studied for a long time; according to the experimental situation, a ‘‘dirty’’ limit is often considered which implies that the mean free path in the layers is the second smallest spatial scale after the Fermi wavelength. However, ...

Machine learning modeling of superconducting critical temperature

Valentin Stanev, 2 Corey Oses, 4 A. Gilad Kusne, 5 Efrain Rodriguez, 2 Johnpierre Paglione, 2 Stefano Curtarolo, 4, 8 and Ichiro Takeuchi 2 Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-4111, USA Center for Nanophysics and Advanced Materials, University of Maryland, College Park, Maryland 20742, USA Department of Mechanical Engineering and Mater...

Discrepancies between experiment and theory in the superconducting proximity effect

The superconducting proximity effect is investigated for SN double layers in a regime where the resulting transition temperature Tc does not depend on the mean free paths of the films and, within limits, not on the transparency of the interface. The experimental results for Tc are compared with a numerical evaluation which was recently developed in our group. The results for the SN double layer...

Critical temperature of a trapped Bose gas: comparison of theory and experiment.

We apply the projected Gross-Pitaevskii equation (PGPE) formalism to the experimental problem of the shift in critical temperature Tc of a harmonically confined Bose gas as reported in Gerbier et al., Phys. Rev. Lett. 92, 030405 (2004). The PGPE method includes critical fluctuations and we find the results differ from various mean-field theories, and are in best agreement with experimental data...

Theory and experiment in high-temperature superconductivity.