Electromagnetic radiation from vortex flow in Type-II superconductors |
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Authors: | Bulaevskii L N Chudnovsky E M |
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Institution: | Los Alamos National Laboratory, Los Alamos, NM 87545, USA. |
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Abstract: | We show that a moving vortex lattice, as it comes to a crystal edge, radiates into a free space the harmonics of the washboard frequency, omega(0)=2pi v/a, up to a superconducting gap, Delta/variant Planck's over 2pi. Here v is the velocity of the vortex lattice and a is the intervortex spacing. We compute radiation power and show that this effect can be used for the generation of terahertz radiation and for characterization of moving vortex lattices. |
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