STM Studies of the Proximity Effect in Superconducting Wires with Artificial Pinning Centers

• Authors: Y. Levi , O. Millo , N. Rizzo , D. Prober , L. Motowidlo
• Languages of publication: EN

Abstracts

EN

Scanning tunneling microscopy and spectroscopy were applied to study the proximity effect with nanometer spatial resolution. The measurements were conducted on novel superconducting wires, which consist of an ordered array of submicron diameter normal metal filaments (Cu, Ni) embedded in a superconducting (NbTi) matrix. Spatially resolved information about the local density of states is obtained by taking I-V curves simultaneously with topographic images. Our data provide direct evidence on the interplay between the normal and superconducting constituents in the vicinity of the interface between them.

Keywords

EN

74.50.+r; 73.40.Gk; 61.16.Ch

Discipline

• 74.50.+r: Tunneling phenomena; Josephson effects(for SQUIDs, see 85.25.Dq; for Josephson devices, see 85.25.Cp; for Josephson junction arrays, see 74.81.Fa)
• 73.40.Gk: Tunneling(for tunneling in quantum Hall effects, see 73.43.Jn)

• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 93
• Issue: 2
• Pages: 425-430

Dates

published

1998-02

Contributors

author

Y. Levi

• Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel

author

O. Millo

• Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel

author

N. Rizzo

• Applied Physics, Yale University, New Haven, CT 06520-8284, USA

author

D. Prober

• Applied Physics, Yale University, New Haven, CT 06520-8284, USA

author

L. Motowidlo

• IGC-AS, Waterbury, CT 06704, USA

Identifiers

DOI

10.12693/APhysPolA.93.425