scholarly journals Collective dynamics of Josephson vortices in intrinsic Josephson junctions: exploration of in-phase locked superradiant vortex flow states

2000 ◽  
Vol 330 (1-2) ◽  
pp. 85-93 ◽  
Author(s):  
M Machida ◽  
T Koyama ◽  
A Tanaka ◽  
M Tachiki
Keyword(s):  
Josephson Junctions ◽  
Vortex Flow ◽  
Collective Dynamics ◽  
Intrinsic Josephson Junctions ◽  
Josephson Vortices ◽  
Flow States

Oscillations of Josephson-Vortex Flow Resistance in Narrow Intrinsic Josephson Junctions

2005 ◽  
Vol 15 (2) ◽  
pp. 912-915 ◽  
Author(s):  
T. Hatano ◽  
H. Wang ◽  
S. Kim ◽  
S. Urayama ◽  
S. Kawakami ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Flow Resistance ◽  
Vortex Flow ◽  
Josephson Vortex ◽  
Intrinsic Josephson Junctions

Collective motion of Josephson vortices in intrinsic Josephson junctions inBi2Sr2CaCu2O8+y

1997 ◽  
Vol 55 (21) ◽  
pp. 14638-14644 ◽  
Author(s):  
G. Hechtfischer ◽  
R. Kleiner ◽  
K. Schlenga ◽  
W. Walkenhorst ◽  
P. Müller ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Collective Motion ◽  
Intrinsic Josephson Junctions ◽  
Josephson Vortices

JOSEPHSON VORTEX FLOW IN Bi2Sr2CaCu2Oy INTRINSIC JOSEPHSON JUNCTIONS

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3678-3681 ◽  
Author(s):  
AKINOBU IRIE ◽  
SHOICHI KANEKO ◽  
GIN-ICHIRO OYA
Keyword(s):  
Electromagnetic Wave ◽  
Field Dependence ◽  
Vortex Dynamics ◽  
Josephson Junctions ◽  
Vortex Flow ◽  
Maximum Flow ◽  
The Other ◽  
Josephson Vortex ◽  
Intrinsic Josephson Junctions ◽  
Velocity Mode

We have studied the vortex dynamics in intrinsic Josephson junctions in mesa-shaped Bi 2 Sr 2 CaCu 2 O y single crystals. By applying magnetic fields parallel to the copper oxide layers of the junctions, Josephson vortex-flow branches were observed in addition to multiple resistive branches on the I–V characteristics. From the field dependence of the maximum flow voltage, the flow velocity of the vortices was estimated to be ~3×106 m/s at 4.2 K, which is close to that of the highest-velocity mode of the electromagnetic wave in them. On the other hand, at 77 K, the velocity decreased from the highest to the lowest with an increase in the number of junctions in the mesas.

SUB-BRANCH SPLITTING IN JOSEPHSON-VORTEX-FLOW CHARACTERISTICS OF A STACK OF Bi2Sr2CaCu2O8+x INTRINSIC JOSEPHSON JUNCTIONS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 205-208 ◽  
Author(s):  
MYUNG-HO BAE ◽  
HU-JONG LEE
Keyword(s):  
Josephson Junctions ◽  
Vortex Flow ◽  
Flow Characteristics ◽  
Vortex State ◽  
Josephson Vortex ◽  
Plasma Mode ◽  
Intrinsic Josephson Junctions ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Branch Splitting

We observed subbranch splitting in the low-bias vortex-flow branch of a dense-Josephson-vortex state in current-voltage characteristics of Bi 2 Sr 2 CaCu 2 O 8+x intrinsic Josephson junctions in the long-junction limit. We suggest that each subbranch corresponds to a plasma mode in serially coupled Josephson junctions, manifested in the Josephson vortex-flow current-voltage characteristics resonating with the plasma modes.

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