scholarly journals Collective pinning of the vortex lattice by columnar defects in layered superconductors

2004 ◽  
Vol 70 (22) ◽  
Author(s):  
J. P. Rodriguez
Keyword(s):  
Vortex Lattice ◽  
Layered Superconductors ◽  
Collective Pinning ◽  
Columnar Defects

Current-induced reordering phase transitions of vortex matter in 3D-layered superconductors

2018 ◽  
Vol 32 (25) ◽  
pp. 1850281 ◽  
Author(s):  
Qingmiao Nie ◽  
Haibin Li
Keyword(s):  
Phase Transitions ◽  
Thermal Noise ◽  
Vortex Lattice ◽  
Three Dimensional ◽  
Xy Model ◽  
Vortex Matter ◽  
Nonequilibrium Phase Transitions ◽  
External Current ◽  
Layered Superconductors ◽  
Pinning Potential

Nonequilibrium phase transitions of vortex matter with a strong random pinning potential in layered superconductors are investigated by the three-dimensional frustrated anisotropic XY model and resistively-shunted junction dynamics at low, middle and high-temperatures, respectively. It is found that a disorder to order phase transition driven by an external current can be obtained at a low-temperature, however, a reordering configuration does not occur at a high-temperature. With the competition between thermal noise, disorder pins and current, the vortex matter can even show the reordering process twice at an intermediate temperature, giving a clear evidence of dc driven vortex lattice reorganization.

Commensurate Inhibition of Vortex Lattice Melting and Enhancement of Critical Current by Periodic Columnar Pins

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3697-3699 ◽  
Author(s):  
Yong-li Ma ◽  
Dai XianXi
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Vortex Lattice ◽  
Periodic Array ◽  
Melting Line ◽  
Thermally Induced ◽  
Vortex Lattice Melting ◽  
Columnar Defects

The stiffness of the vortex lattice and the size of thermally induced fluctuations in the presence of a periodic array of columnar pins are calculated. The commensurability effect on the melting line Tm and critical current density Jc is considered. The results show that the melting line is pushed to higher temperatures, the strongly pinned vortex lattice carries the greatly enhanced Jc and a series of lobes occur in Tm(H) and Jc(H) when field closes to a commensurability condition. Jc(T)~(1-T/Tc)3/2 both with and without columnar defects. They agree well with experiments.

scholarly journals Dynamics and transformations of the Josephson vortex lattice in layered superconductors

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
D. A. Ryndyk ◽  
V. I. Pozdnjakova ◽  
I. A. Shereshevskii ◽  
N. K. Vdovicheva
Keyword(s):  
Vortex Lattice ◽  
Josephson Vortex ◽  
Layered Superconductors
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