Superconducting properties of Ta/Ge multilayers

Ben J. Ruck; S. Brown; H. Joseph Trodahl

doi:10.1117/12.250278

5 July 1996 Superconducting properties of Ta/Ge multilayers

Ben J. Ruck, S. Brown, H. Joseph Trodahl

Proceedings Volume 2697, Oxide Superconductor Physics and Nano-Engineering II; (1996) https://doi.org/10.1117/12.250278
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

We report results of measurements on the superconductor/insulator system consisting of alternating layers of amorphous Ta and amorphous Ge. This system is relatively complex owing to a very thin mixed interface layer in which the pairing interaction is stronger than in the Ta itself. Measurements have now been performed using a dilution refrigerator at temperatures down to 50 mK, and using magnetic fields of up to 14 tesla. The phase diagram of the upper critical field versus temperature has been investigated for various layer thicknesses with the field both parallel and perpendicular to the layers. The results are shown to conform with existing theories on layered superconductors. The nonlinear I-V characteristic of these multilayers is also analyzed in zero field for a sample with thin superconducting layers and evidence for a Kosterlitz- Thouless transition is observed.

Citation Download Citation

Ben J. Ruck, S. Brown, and H. Joseph Trodahl "Superconducting properties of Ta/Ge multilayers", Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); https://doi.org/10.1117/12.250278

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available