Quantum tunneling of the order parameter in superconducting nanowires

Quantum mechanics of superconducting nanowires

Quantum phase slips in superconducting nanowires.

We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1 microm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to T(c) and quantum p...

Nonmonotonic dx22y2 Superconducting Order Parameter in Nd22xCexCuO4

G. Blumberg,1,* A. Koitzsch,1 A. Gozar,1 B. S. Dennis,1 C. A. Kendziora,2 P. Fournier,3,† and R. L. Greene3 1Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 2United States Naval Research Laboratory, Code 6333, Washington, D.C. 20375 3Center for Superconductivity Research and Department of Physics, University of Maryland, College Park, Maryland 20742 (Received 15 June 2001;...

Superconducting order parameter symmetry in multilayer cuprates.

In this paper we classify the allowed order parameter symmetries in multilayer cuprates and discuss their physical consequences, with emphasis on Josephson tunneling and impurity scattering. Our solutions to the gap equation are based on highly non-specific forms for the interand intra-plane pairing interactions in order to arrive at the most general conclusions. Within this framework, the bi-l...

Formation of Quantum Phase Slip Pairs in Superconducting Nanowires

A. Belkin, M. Belkin, V. Vakaryuk, S. Khlebnikov, and A. Bezryadin Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA American Physical Society, 1 Research Road, Ridge, New York 11961, USA Department of Physics and Astronomy, Purdue University, West Lafayette...