Relaxation of nonequilibrium quasiparticles in mesoscopic size superconductors

Journal of Physics. Condensed Matter : an Institute of Physics Journal
K Yu ArutyunovA S Vasenko

Abstract

Rapid development of micro- and nanofabrication methods have provoked interest and enabled experimental studies of electronic properties of a vast class of (sub)micrometer-size solid state systems. Mesoscopic-size hybrid structures, containing superconducting elements, have become interesting objects for basic research studies and various applications, ranging from medical and astrophysical sensors to quantum computing. One of the most important aspects of physics, governing the behavior of such systems, is the finite concentration of nonequilibrium quasiparticles, present in a superconductor even well below the temperature of superconducting transition. Those nonequilibrium excitations might limit the performance of a variety of superconducting devices, like superconducting qubits, single-electron turnstiles and microrefrigerators. On the contrary, in some applications, like detectors of electromagnetic radiation, the nonequilibrium state is essential for their operation. It is therefore of vital importance to study the mechanisms of nonequilibrium quasiparticle relaxation in superconductors of mesoscopic dimensions, where the whole structure can be considered as an 'interface'. At early stages of research the problem was most...Continue Reading

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Citations

Feb 23, 2020·Beilstein Journal of Nanotechnology·Tairzhan KarabassovAndrey S Vasenko
May 12, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Ekta BhatiaKartik Senapati
Jul 29, 2021·Scientific Reports·O V SkryabinaV S Stolyarov

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