136 citations · 960 across the 19 of their papers we have counts for
19 papers
Superheating Field of Extreme Type-II Superconductors Calculated from the Eliashberg Theory
Ramesh Paudel, Alex Gurevich
We calculate the superheating field of a type-II superconductor with a large Ginzburg-Landau parameter from the isotropic Eliashberg theory. It is shown that the temperature…
Reaching the intrinsic performance limits of superconducting nanowire single-photon detectors up to 0.1 mm wide
Kristen M. Parzuchowski, Eli Mueller, Bakhrom G. Oripov +13
Superconducting nanowire single-photon detectors (SNSPDs) combine high detection efficiency, low noise, and excellent timing resolution, making them a leading platform for photon-c…
Superradiant emission stimulated by vortex-antivortex pair production in layered superconductors
Ahmad Sheikhzada, Alex Gurevich
We report numerical simulations of coupled sine-Gordon and heat diffusion equations describing dynamic states stimulated by a trapped vortex driven by dc current in a stack of up t…
Anisotropy Reversal of the Upper Critical Field at Low Temperatures and Spin-Locked Superconductivity in K2Cr3As3
F. F. Balakirev, T. Kong, M. Jaime +5
We report the first measurements of the anisotropic upper critical field for KCrAs single crystals up to 60 T and K. Our results show that t…
Roles of intrinsic anisotropy and pi-band pairbreaking effects on critical currents in tilted c-axis MgB2 films probed by magneto-optical and transport measurements
A. A. Polyanskii, F. Kametani, D. Abraimov +7
Investigations of MgB2 and Fe-based superconductors in recent years have revealed many unusual effects of multiband superconductivity but manifestations of anisotropic multiband ef…
Nonlinear dynamics of Josephson vortices in a film screen under dc and ac magnetic fields
Ahmad Sheikhzada, Alexander Gurevich
We present detailed numerical simulations of Josephson vortices in a long Josephson junction perpendicular to a thin film screen under strong dc and ac magnetic fields. By solving…
Reduction of Dissipative Nonlinear Conductivity of Superconductors by Static and Microwave Magnetic Fields
A. Gurevich
A theory of dissipative nonlinear conductivity, , of s-wave superconductors under strong electromagnetic fields at low temperatures is proposed. Closed-form expressions f…
Effect of Impurities on the Superheating field of Type II superconductors
F. Pei-Jen Lin, A. Gurevich
We consider the effect of nonmagnetic and magnetic impurities on the superheating field in a type-II superconductor. We solved the Eilenberger equations, which take into acco…
The behavior of grain boundaries in the Fe-based superconductors
J. H. Durrell, C. -B. Eom, A. Gurevich +4
The Fe-based superconductors (FBS) are an important new class of superconducting materials. As with any new superconductor with a high transition temperature and upper critical fie…
Anisotropic upper critical field and a possible Fulde-Ferrel-Larkin-Ovchinnikov state in a stoichiometric pnictide superconductor LiFeAs
K. Cho, H. Kim, M. A. Tanatar +6
Measurements of the temperature and angular dependencies of the upper critical fields of a stoichiometric single crystal LiFeAs in pulsed magnetic fields up to 50 T were p…
Helical instability of charged vortices in layered superconductors
A. Gurevich
It is shown that the electric charge of vortices can result in a helical instability of straight vortex lines in layered superconductors, particularly Bi-based cuprates or organic…
Measurement of the nonlinear Meissner effect in superconducting Nb films using a resonant microwave cavity: A probe of unconventional pairing symmetries
N. Groll, A. Gurevich, I. Chiorescu
We report observation of the nonlinear Meissner effect (NLME) in Nb films by measuring the resonance frequency of a planar superconducting cavity as a function of the magnitude and…
Intergrain current flow in a randomly oriented polycrystalline SmFeAsO0.85 oxypnictide
F. Kametani, P. Li, D. Abraimov +11
We report a direct current transport study of the local intergrain connections in a polycrystalline SmFeAsO0.85 (Sm1111) bulk, for which we earlier estimated significant intergranu…
Phase textures induced by dc current pairbreaking in multilayer structures and two-gap superconductors
A. Gurevich, V. M. Vinokur
We predict current-induced formation of equilibrium phase textures for a multicomponent superconducting order parameter. Using the two-component Ginzburg-Landau and Usadel equation…
Intrinsic Josephson effect and nonequilibrium soliton structures in two-gap superconductors
A. Gurevich, V. M. Vinokur
We predict a new dynamic state in current-carrying superconductors with multicomponent order parameter. If the current density J exceeds a critical value J_t, an interband breakdow…
Nonlinear dynamics of vortices in easy flow channels along grain boundaries in superconductors
A. Gurevich
A theory of nonlinear dynamics of mixed Abrikosov vortices with Josephson cores (AJ vortices) on low-angle grain boundaries (GB) in superconductors is proposed. Dynamics and pinnin…
Flux flow of Abrikosov-Josephson vortices along grain boundaries in high-temperature superconductors
A. Gurevich, M. S. Rzchowski, G. Daniels +5
We show that low-angle grain boundaries (GB) in high-temperature superconductors exhibit intermediate Abrikosov vortices with Josephson cores, whose length along GB is smaller…
Vortex avalanches and magnetic flux fragmentation in superconductors
Igor Aranson, Alex Gurevich, Valerii Vinokur
We report results of numerical simulations of non isothermal dendritic flux penetration in type-II superconductors. We propose a generic mechanism of dynamic branching of a propaga…
Effect of fluctuations on vortex lattice structural transitions in superconductors
A. Gurevich, V. G. Kogan
The rhombic-to-square transition field for cubic and tetragonal materials in fields along [001] is evaluated using the nonlocal London theory with account of thermal…