Bulaevskii L N, Chudnovsky E M
Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Phys Rev Lett. 2006 Nov 10;97(19):197002. doi: 10.1103/PhysRevLett.97.197002. Epub 2006 Nov 7.
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.
我们表明，当移动的涡旋晶格到达晶体边缘时，它会向自由空间辐射搓板频率ω(0)=2πv/a的谐波，直至超导能隙Δ/（2πћ）。这里v是涡旋晶格的速度，a是涡旋间距。我们计算了辐射功率，并表明这种效应可用于太赫兹辐射的产生以及移动涡旋晶格的表征。
