Vortex lattice matching effects in a washboard pinning potential induced by Co nanostripe arrays

2011 ◽  
Vol 471 (15-16) ◽  
pp. 449-452 ◽  
Author(s):  
Oleksandr V. Dobrovolskiy ◽  
Evgeniya Begun ◽  
Michael Huth ◽  
Valerij A. Shklovskij ◽  
Menachem I. Tsindlekht
Keyword(s):  
Vortex Lattice ◽  
Lattice Matching ◽  
Pinning Potential ◽  
Washboard Pinning Potential

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.

scholarly journals Thickness-modulated tungsten–carbon superconducting nanostructures grown by focused ion beam induced deposition for vortex pinning up to high magnetic fields

2016 ◽  
Vol 7 ◽  
pp. 1698-1708 ◽  
Author(s):  
Ismael García Serrano ◽  
Javier Sesé ◽  
Isabel Guillamón ◽  
Hermann Suderow ◽  
Sebastián Vieira ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Focused Ion Beam ◽  
Vortex Lattice ◽  
Ion Beam ◽  
Electrical Current ◽  
Single Step ◽  
Vortex Pinning ◽  
High Magnetic Fields ◽  
Pinning Potential ◽  
External Stimuli

We report efficient vortex pinning in thickness-modulated tungsten–carbon-based (W–C) nanostructures grown by focused ion beam induced deposition (FIBID). By using FIBID, W–C superconducting films have been created with thickness modulation properties exhibiting periodicity from 60 to 140 nm, leading to a strong pinning potential for the vortex lattice. This produces local minima in the resistivity up to high magnetic fields (2.2 T) in a broad temperature range due to commensurability effects between the pinning potential and the vortex lattice. The results show that the combination of single-step FIBID fabrication of superconducting nanostructures with built-in artificial pinning landscapes and the small intrinsic random pinning potential of this material produces strong periodic pinning potentials, maximizing the opportunities for the investigation of fundamental aspects in vortex science under changing external stimuli (e.g., temperature, magnetic field, electrical current).

Preparation of regular arrays of antidots in YBa2Cu3O7 thin films and observation of vortex lattice matching effects

1997 ◽  
Vol 71 (7) ◽  
pp. 962-964 ◽  
Author(s):  
A. Castellanos ◽  
R. Wördenweber ◽  
G. Ockenfuss ◽  
A. v.d. Hart ◽  
K. Keck
Keyword(s):  
Thin Films ◽  
Vortex Lattice ◽  
Lattice Matching ◽  
Regular Arrays
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