Vortex matter freezing inBi2Sr2CaCu2O8samples with a very dense distribution of columnar defects
نویسندگان
چکیده
منابع مشابه
Vortex localization in single crystals of Tl2Ba2CuO61d with columnar defects
We investigate the effect of columnar defects on the low-temperature magnetic response of a highly anisotropic superconductor. Using a local magnetic field sensor, the vortex creep rate in single crystals of Tl2Ba2CuO61d containing columnar defects is found to be a highly nonmonotonic function of vortex density. The creep rate is largest when the vortex density is less than the defect density. ...
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To investigate the existence of a splay effect in Bi2Sr2CaCu2O8 (Bi-2212), vortex pinning has been studied in different configurations of strongly inclined columnar defects (75◦ from the c axis), installed by heavy-ion irradiation. It is shown that the symmetry of the track setting with respect to the field direction is a more influent parameter than the presence of a dispersion in the track di...
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The exploration of the phase diagram of dense baryonic matter is an area of intense theoretical and experimental activity. Baryonic systems, from dilute neutron matter at low density to superconducting quark matter at high density, exhibit an enormous variety of many-body effects. Despite its simplicity all these phenomena are ultimately described by the lagrangian of QCD. In practice it is usu...
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We have performed large-scale dynamical simulations on the current-driven three-dimensional frustrated anisotropic XY model with sparse weak columnar defects. Below the matching field, a moving Bose glass phase with superconducting coherence but without spatial order is observed at low temperatures. For very small columnar defect concentrations, a moving Bragg glass phase with both superconduct...
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The melting of the vortex lattice in highly anisotropic, layered superconductors with commensurate, periodic columnar pins is studied in a geometry where magnetic field and columnar pins are normal to the layers. Thermodynamic properties and equilibrium density distributions are obtained from numerical minimization of an appropriate free-energy functional. We find a line of first-order transiti...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2016
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.93.054505