Approximate analytic equations for small shapiro step Josephson junctions

1995 ◽  
Vol 78 (2) ◽  
pp. 87-97
Author(s):  
Keiichi Yamaguchi ◽  
Akira Kawaji ◽  
Katsumi Suzuki ◽  
Syouji Tanaka
Keyword(s):  
Josephson Junctions ◽  
Shapiro Step

Shapiro Step Response of the Surface Intrinsic Josephson Junctions in Bi2Sr2CaCu2OySingle Crystals at Elevated Temperatures

2005 ◽  
Vol 44 (No. 16) ◽  
pp. L491-L493 ◽  
Author(s):  
Gin-ichro Oya ◽  
Atsushi Terada ◽  
Nobuyuki Takahashi ◽  
Akinobu Irie ◽  
Taizo Hashimoto
Keyword(s):  
Josephson Junctions ◽  
Elevated Temperatures ◽  
Step Response ◽  
Shapiro Step ◽  
Intrinsic Josephson Junctions

Exact calculation of Shapiro step sizes for pulse-driven Josephson junctions

1992 ◽  
Vol 46 (13) ◽  
pp. 8349-8352 ◽  
Author(s):  
Boris Ya. Shapiro ◽  
Ido Dayan ◽  
Moshe Gitterman ◽  
George H. Weiss
Keyword(s):  
Josephson Junctions ◽  
Exact Calculation ◽  
Shapiro Step

scholarly journals Reappearance of first Shapiro step in narrow topological Josephson junctions

2021 ◽  
Vol 7 (26) ◽  
pp. eabf1854
Author(s):  
Daniel Rosenbach ◽  
Tobias W. Schmitt ◽  
Peter Schüffelgen ◽  
Martin P. Stehno ◽  
Chuan Li ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Bound States ◽  
Weak Link ◽  
Surface States ◽  
Current Phase ◽  
Surface Charges ◽  
Shapiro Step ◽  
Gap Opening ◽  
Topological Surface ◽  
Spin Texture

In Josephson junctions, a supercurrent across a nonsuperconducting weak link is carried by electron-hole bound states. Because of the helical spin texture of nondegenerate topological surface states, gapless bound states are established in junctions with topological weak link. These have a characteristic 4π-periodic current phase relation (CΦR) that leads to twice the conventional Shapiro step separation voltage in radio frequency–dependent measurements. In this context, we identify an attenuated first Shapiro step in (Bi0.06Sb0.94)2Te3 (BST) Josephson junctions with AlOx capping layer. We further investigate junctions on narrow, selectively deposited BST nanoribbons, where surface charges are confined to the perimeter of the nanoribbon. Within these junctions, previously identified signatures of gapless bound states are absent. Because of confinement, transverse momentum sub-bands are quantized and a topological gap opening is observed. Surface states within these quantized sub-bands are spin degenerate, which evokes bound states of conventional 2π-periodic CΦR within the BST nanoribbon weak link.

Low-Tcramp-type Josephson junctions for SQUIDS

2002 ◽  
Vol 12 (3) ◽  
pp. 133-136 ◽  
Author(s):  
M. Podt ◽  
B. G.A. Rolink ◽  
J. Flokstra ◽  
H. Regalia
Keyword(s):  
Josephson Junctions

Application of silicon substrates for high-Tc Josephson junctions and SQUIDs

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-297-Pr3-300 ◽  
Author(s):  
S. Linzen ◽  
Y. J. Tian ◽  
U. Hübner ◽  
F. Schmidl ◽  
J. Scherbel ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Silicon Substrates ◽  
High Tc
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