scholarly journals Half-integer Shapiro steps in strong ferromagnetic Josephson junctions

2021 ◽  
Vol 104 (10) ◽  
Author(s):  
Yunyan Yao ◽  
Ranran Cai ◽  
See-Hun Yang ◽  
Wenyu Xing ◽  
Yang Ma ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Shapiro Steps ◽  
Half Integer

scholarly journals Observation of half-integer Shapiro steps in step-edge YBa2Cu3Oy Josephson junctions

1994 ◽  
Vol 235-240 ◽  
pp. 3341-3342 ◽  
Author(s):  
H.C. Yang ◽  
L.C. Ku ◽  
H.M. Cho ◽  
J.H. Lu ◽  
H.E. Horng
Keyword(s):  
Josephson Junctions ◽  
Step Edge ◽  
Shapiro Steps ◽  
Half Integer

EFFECT OF THERMAL NOISE ON THE CURRENT-VOLTAGE CHARACTERISTICS OF JOSEPHSON JUNCTIONS

1996 ◽  
Vol 10 (22) ◽  
pp. 1095-1102 ◽  
Author(s):  
A.K. CHATTAH ◽  
C.B. BRIOZZO ◽  
O. OSENDA ◽  
M.O. CÁCERES
Keyword(s):  
Josephson Junctions ◽  
Thermal Noise ◽  
Planck Equation ◽  
Resonance Problem ◽  
Shapiro Steps ◽  
Periodic Distribution ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Path Integral Method ◽  
Asymptotic Time

We analyze the influence of thermal noise on the Shapiro steps appearing in the current-voltage characteristics of Josephson junctions. We solve the Fokker-Planck equation describing the system by a path integral method in the steepest-descent approximation, previously applied to the stochastic resonance problem. We obtain the Asymptotic Time-Periodic Distribution Pas(ϕ, t), where ϕ∈[0, 2π] and compute from it the voltage [Formula: see text], constructing the I-V characteristics. We find a defined “softening” of the Shapiro steps as temperature increases, for values of the system parameters in the experimentally accessible range.

scholarly journals Erratum: ac-driven annular Josephson junctions: The missing Shapiro steps [Phys. Rev. B 101 , 024512 (2020)]

2020 ◽  
Vol 101 (8) ◽  
Author(s):  
I. R. Rahmonov ◽  
J. Tekić ◽  
P. Mali ◽  
A. Irie ◽  
Yu. M. Shukrinov
Keyword(s):  
Josephson Junctions ◽  
Shapiro Steps

The Shapiro steps revealed by Josephson junctions embedded in silicon microcavities

2012 ◽  
Vol 9 (5) ◽  
pp. 1247-1252
Author(s):  
Nikolay Bagraev ◽  
Eduard Danilovsky ◽  
Dmitry Gets ◽  
Leonid Klyachkin ◽  
Andrey Kudryavtsev ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Shapiro Steps

scholarly journals Higher-order effects on Shapiro steps in Josephson junctions

1999 ◽  
Vol 59 (1) ◽  
pp. 58-61 ◽  
Author(s):  
Kim Ø. Rasmussen ◽  
Vadim Zharnitsky ◽  
Igor Mitkov ◽  
Niels Grønbech-Jensen
Keyword(s):  
Josephson Junctions ◽  
Higher Order ◽  
Order Effects ◽  
Shapiro Steps ◽  
Higher Order Effects

scholarly journals Josephson Effect in MgB2/Pd/Nb Trilayer Josephson Junctions

2021 ◽  
Vol 47 (3) ◽  
pp. 1062-1072
Author(s):  
Anayesu B Malisa
Keyword(s):  
Josephson Junctions ◽  
Josephson Effect ◽  
Molecular Beam ◽  
Bottom Electrode ◽  
Tunnel Junctions ◽  
Rf Sputtering ◽  
Ex Situ ◽  
Shapiro Steps ◽  
Josephson Tunnel ◽  
Junction Plane

This paper reports fabrication techniques and results of MgB2/Pd/Nb trilayer Josephson junctions. The MgB2 bottom electrode was co-evaporated by molecular beam epitaxy (MBE) technique from both magnesium and boron sources at a low substrate temperature ~ 300 °C, while the interlayer and the top niobium electrode (Pd/Nb bilayer) were deposited ex-situ using RF sputtering. The junctions exhibited  and  Josephson effect as well as a modulation of the critical current in a magnetic field applied in a direction normal to the junction plane. Fractional and integer Shapiro steps were observed at voltages corresponding to the frequency of the applied microwave radiation field. The  products of the junctions compare well with the previously reported values. The results suggest that it should be possible to fabricate all-MgB2 and MgB2 as one of the electrodes Superconductor/Normal/Superconductor (SNS), Superconductor/Insulator/Superconductor (SIS) or even Superconductor/Ferromagnet/Superconductor (SFS) tunnel junctions with interesting characteristics and for various applications. Keywords: MgB2; all-MgB2; Josephson Tunnel junctions; trilayer devices; Niobium

Synchronization of fluxon motion on Shapiro steps in Josephson junctions

1993 ◽  
Vol 177 (4-5) ◽  
pp. 351-356 ◽  
Author(s):  
Niels Grønbech-Jensen ◽  
Peter S. Lomdahl
Keyword(s):  
Josephson Junctions ◽  
Shapiro Steps
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