Physics – Condensed Matter – Superconductivity
Scientific paper
2008-11-17
Physical Review B 78, 094506 (2008)
Physics
Condensed Matter
Superconductivity
9 pages, 2 figures
Scientific paper
10.1103/PhysRevB.78.094506
Anomalous far infrared monochromatic transmission through a lattice of Abrikosov vortices in a type-II superconducting film is found and reported. The transmitted frequency corresponds to the photonic mode localized by the defects of the Abrokosov lattice. These defects are formed by extra vortices placed out of the nodes of the ideal Abrokosov lattice. The extra vortices can be pinned by crystal lattice defects of a superconductor. The corresponding frequency is studied as a function of magnetic field and temperature in the framework of the Dirac-type two-band model. While our approach is valid for all type-II superconductors, the specific calculations have been performed for the YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ (YBCO). The control of the transmitted frequency by varying magnetic field and/or temperature is analyzed. It is suggested that found anomalously transmitted localized mode can be utilized in the far infrared monochromatic filters.
Berman Oleg L.
Boyko Vladimir S.
Kezerashvili Roman Ya.
Lozovik Yurii E.
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