Phase transition in positionally disordered Josephson-junction arrays in a transverse magnetic field

1988 ◽  
Vol 37 (13) ◽  
pp. 7557-7563 ◽  
Author(s):  
Amitabha Chakrabarti ◽  
Chandan Dasgupta
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Josephson Junction ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
Josephson Junction Arrays ◽  
Junction Arrays

The Quantuam Melting Transitions with the Magnetic Field in Weakly Disordered Josephson Junction Arrays

2013 ◽  
Vol 380-384 ◽  
pp. 4845-4848
Author(s):  
Zhi Gang Zhao ◽  
Cun Li Dai ◽  
Lun Wu Zeng
Keyword(s):  
Magnetic Field ◽  
Josephson Junction ◽  
Vortex System ◽  
Josephson Junction Arrays ◽  
Melting Transitions ◽  
Dynamic Melting ◽  
Junction Arrays ◽  
The Magnetic Field ◽  
A Current ◽  
Moving Vortex

Using the resistively shunted junction model, we study the magnetic field induced dynamic melting transitions of a current-driven vortex system in two-dimensional weakly disordered Josephson junction arrays at zero temperature. From the unified model simulations, we find that the intrinsic quantum vortex liquid (QVL) phenomenon, which consistent with the recent experimental reports in disordered and superconducting MoGe films. The enhancement of critical current in the QVL phase arises from intrinsic quantum fluctuations in the moving vortex flow.

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