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
2005 ◽  
Vol 44 (No. 16) ◽  
pp. L491-L493 ◽  
Author(s):  
Gin-ichro Oya ◽  
Atsushi Terada ◽  
Nobuyuki Takahashi ◽  
Akinobu Irie ◽  
Taizo Hashimoto

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

2021 ◽  
Vol 7 (26) ◽  
pp. eabf1854
Author(s):  
Daniel Rosenbach ◽  
Tobias W. Schmitt ◽  
Peter Schüffelgen ◽  
Martin P. Stehno ◽  
Chuan Li ◽  
...  

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.


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

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-297-Pr3-300 ◽  
Author(s):  
S. Linzen ◽  
Y. J. Tian ◽  
U. Hübner ◽  
F. Schmidl ◽  
J. Scherbel ◽  
...  

Author(s):  
Nurlan Temirgaliyev ◽  
◽  
Sabit Sarypbekovich Kudaibergenov ◽  
Nurlan Zhumabaevich Nauryzbayev ◽  
◽  
...  
Keyword(s):  

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