Ultra-fast vortex motion in dirty Nb-C superconductor with a close-to-perfect edge barrier
Ultra-fast vortex motion in dirty Nb-C superconductor with a close-to-perfect edge barrier
复制标题
肮脏的 Nb-C 超导体中的超快涡流运动,具有接近完美的边缘势垒
DOI:
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
M. Huth
中科院分区:
文献类型:
--
作者:
O. Dobrovolskiy;D. Vodolazov;F. Porrati;R. Sachser;V. M. Bevz;M. Mikhailov;A. Chumak;M. Huth
The ultra-fast dynamics of superconducting vortices harbors rich physics generic to nonequilibrium collective systems. The phenomenon of flux-flow instability (FFI), however, prevents its exploration and sets practical limits for the use of vortices in various applications. To suppress the FFI, a superconductor should exhibit a rarely achieved combination of properties: weak volume pinning, close-to-depairing critical current, and fast heat removal from heated electrons. Here, we demonstrate experimentally ultra-fast vortex motion at velocities of 10-15 km/s in a directly written Nb-C superconductor in which a close-to-perfect edge barrier orders the vortex motion at large current values. The spatial evolution of the FFI is described using the edge-controlled FFI model, implying a chain of FFI nucleation points along the sample edge and their development into self-organized Josephson-like junctions (vortex rivers). In addition, our results offer insights into the applicability of widely used FFI models and suggest Nb-C to be a good candidate material for fast single-photon detectors.
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影响因子:
4.6
作者:
Kahl O;Ferrari S;Kovalyuk V;Goltsman GN;Korneev A;Pernice WHP
通讯作者:
Pernice WHP
影响因子:
4.6
作者:
Dobrovolskiy, O. V.;Begun, E.;Huth, M.
通讯作者:
Huth, M.
影响因子:
16.6
作者:
Dobrovolskiy OV;Bevz VM;Mikhailov MY;Yuzephovich OI;Shklovskij VA;Vovk RV;Tsindlekht MI;Sachser R;Huth M
通讯作者:
Huth M
影响因子:
3.1
作者:
Dobrovolskiy OV;Kompaniiets M;Sachser R;Porrati F;Gspan C;Plank H;Huth M
通讯作者:
Huth M
影响因子:
4.6
作者:
Dobrovolskiy, O., V;Bevz, V. M.;Huth, M.
通讯作者:
Huth, M.