scholarly journals Dynamic transition of vortices into phase slips and generation of vortex-antivortex pairs in thin film Josephson junctions under dc and ac currents

2017 ◽  
Vol 95 (21) ◽  
Author(s):  
Ahmad Sheikhzada ◽  
Alex Gurevich
Keyword(s):  
Thin Film ◽  
Josephson Junctions ◽  
Dynamic Transition ◽  
Phase Slips

Niobium thin‐film Josephson junctions using a semiconductor barrier

1973 ◽  
Vol 44 (10) ◽  
pp. 4732-4738 ◽  
Author(s):  
W. H. Keller ◽  
J. E. Nordman
Keyword(s):  
Thin Film ◽  
Josephson Junctions

Flux penetration in bicrystal-substrate thin-film YBa2Cu3O7−δ Josephson junctions

1997 ◽  
Vol 70 (4) ◽  
pp. 517-519 ◽  
Author(s):  
B. M. Hinaus ◽  
R. D. Redwing ◽  
M. S. Rzchowski
Keyword(s):  
Thin Film ◽  
Josephson Junctions ◽  
Flux Penetration

High-Tc thin film Josephson junctions and DC-SQUIDs

1993 ◽  
Vol 1 (10-12) ◽  
pp. 1665-1673 ◽  
Author(s):  
L. Doerrer ◽  
F. Schmidl ◽  
P. Seidel ◽  
E. Heinz ◽  
K. Zach ◽  
...  
Keyword(s):  
Thin Film ◽  
Josephson Junctions ◽  
High Tc

Characteristics of Nb Thin-Film Point-Contact Josephson Junctions

1984 ◽  
Vol 23 (Part 1, No. 5) ◽  
pp. 570-574
Author(s):  
Seiichi Naito ◽  
Yasushi Higashino
Keyword(s):  
Thin Film ◽  
Josephson Junctions ◽  
Point Contact

scholarly journals BaFe1.8Co0.2As2 thin film hybrid Josephson junctions

2010 ◽  
Vol 97 (17) ◽  
pp. 172504 ◽  
Author(s):  
S. Schmidt ◽  
S. Döring ◽  
F. Schmidl ◽  
V. Grosse ◽  
P. Seidel ◽  
...  
Keyword(s):  
Thin Film ◽  
Josephson Junctions

Thin‐film YBa2Cu3O7−x direct current SQUIDs with Josephson junctions made by direct electron beam writing

1996 ◽  
Vol 69 (17) ◽  
pp. 2590-2592
Author(s):  
B. Nadgorny ◽  
S. Shokhor ◽  
M. Gurvitch ◽  
S. Y. Hou ◽  
Julia M. Phillips
Keyword(s):  
Thin Film ◽  
Electron Beam ◽  
Direct Current ◽  
Josephson Junctions

scholarly journals RESISTANCE IN SUPERCONDUCTORS

2010 ◽  
Vol 24 (20n21) ◽  
pp. 4039-4080 ◽  
Author(s):  
Bertrand I. Halperin ◽  
Gil Refael ◽  
Eugene Demler
Keyword(s):  
Electrical Resistance ◽  
Josephson Junctions ◽  
Quantum Phase Transitions ◽  
Vortex Pinning ◽  
Free Energy Barrier ◽  
Slip Rates ◽  
Theoretical Concepts ◽  
Topological Excitations ◽  
Isolated Points ◽  
Phase Slips

In this pedagogical review, we discuss how electrical resistance can arise in superconductors. Starting with the idea of the superconducting order parameter as a condensate wave function, we introduce vortices as topological excitations with quantized phase winding, and we show how phase slips occur when vortices cross the sample. Superconductors exhibit non-zero electrical resistance under circumstances where phase slips occur at a finite rate. For one-dimensional superconductors or Josephson junctions, phase slips can occur at isolated points in space-time. Phase slip rates may be controlled by thermal activation over a free-energy barrier, or in some circumstances, at low temperatures, by quantum tunneling through a barrier. We present an overview of several phenomena involving vortices that have direct implications for the electrical resistance of superconductors, including the Berezinskii–Kosterlitz–Thouless transition for vortex-proliferation in thin films, and the effects of vortex pinning in bulk type II superconductors on the nonlinear resistivity of these materials in an applied magnetic field. We discuss how quantum fluctuations can cause phase slips and review the non-trivial role of dissipation on such fluctuations. We present a basic picture of the superconductor-to-insulator quantum phase transitions in films, wires, and Josephson junctions. We point out related problems in superfluid helium films and systems of ultra-cold trapped atoms. While our emphasis is on theoretical concepts, we also briefly describe experimental results, and we underline some of the open questions.

Josephson fluxon flow and phase diffusion in thin-film intrinsic Josephson junctions

2004 ◽  
Vol 95 (9) ◽  
pp. 4941-4948 ◽  
Author(s):  
P. A. Warburton ◽  
A. R. Kuzhakhmetov ◽  
O. S. Chana ◽  
G. Burnell ◽  
M. G. Blamire ◽  
...  
Keyword(s):  
Thin Film ◽  
Josephson Junctions ◽  
Phase Diffusion ◽  
Intrinsic Josephson Junctions
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