Characterization of the interface between a normal metal and a superconductor using magnetic screening

Author

Soulen, R.J., Jr. ; Claassen, J.H. ; Osofsky, M.S. ; Trotter, G. ; Woods, G.T. ; Ovchinnikov, Yu N. ; Kresen, V. ; Tralshawala, N.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

2838

Lastpage

2841

Abstract

We have predicted the behavior of magnetic screening of N/I/S trilayers as a function of a single parameter W that parameterizes the discontinuity of the order parameter at the interface. We have compared these calculations with experimental measurements of the temperature (10 K to 1.5 K) dependence of the magnetic screening for several Nb/NbO/Al trilayers and excellent agreement between the predictions and measurements is observed. This agreement provides further understanding of the proximity effect when characterizing the N/S interface in many devices.

Keywords

aluminium; magnetic shielding; niobium; niobium compounds; proximity effect (superconductivity); superconducting thin films; 10 to 1.5 K; N/I/S trilayers; Nb-NbO-Al; Nb/NbO/Al trilayers; magnetic screening; normal metal/superconductor interface; order parameter discontinuity; proximity effect; Laboratories; Legged locomotion; Magnetic analysis; Niobium compounds; Optical reflection; Proximity effect; Superconducting magnets; Superconducting transition temperature; Superconductivity; Temperature measurement;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812024

Filename

1212212