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Article
Open AccessSupercapacitance and superinductance of TiN and NbTiN films in the vicinity of superconductor-to-insulator transition
We investigate the low-temperature complex impedance of disordered insulating thin TiN and NbTiN films in the frequency region 400 Hz–1 MHz in close proximity to the superconductor–insulator transition (SIT). ...
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Article
Imaging quantum fluctuations near criticality
A quantum phase transition (QPT) occurs between two competing phases of matter at zero temperature, driven by quantum fluctuations. Although the presence of these fluctuations is well established, they have no...
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Article
Superconductor–Insulator Transition in NbTiN Films
Experimental results indicating a direct disorder-induced superconductor–insulator transition in NbTiN thin films have been reported. It has been shown that an increase in the resistance per square in the norm...
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Article
Open AccessElectronic transport in two-dimensional high dielectric constant nanosystems
There has been remarkable recent progress in engineering high-dielectric constant two dimensional (2D) materials, which are being actively pursued for applications in nanoelectronics in capacitor and memory de...
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Article
Nonequilibrium transport near the superconducting transition in TiN films
The linear and nonlinear conductions of titanium nitride films with the thickness d ≤ 10 nm have been studied experimentally in the region of superconducting transitions. It has been shown that the inclusion of a...
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Article
Magnetic field-induced dissipation-free state in superconducting nanostructures
A superconductor in a magnetic field acquires a finite electrical resistance caused by vortex motion. A quest to immobilize vortices and recover zero resistance at high fields made intense studies of vortex pi...
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Chapter and Conference Paper
Low Temperature Transport in Tunnel Junction Arrays: Cascade Energy Relaxation
A theory of far-from-equilibrium transport in arrays of tunnel junctions is developed. We show that at low temperatures the energy relaxation ensuring tunneling current can become a cascade two-stage process: ...
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Chapter and Conference Paper
Synchronized Andreev Transmission in Chains of SNS Junctions
We construct a nonequilibrium theory for the charge transfer through a diffusive array of alternating normal (N) and superconducting (S) islands comprising an SNSNS junction, with the size of the central S-isl...
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Article
Hyperactivated resistance in TiN films on the insulating side of the disorder-driven superconductor-insulator transition
We investigate the insulating phase that forms in a titanium nitride film in a close vicinity of the disorder-driven superconductor-insulator transition. In zero magnetic field the temperature dependence of th...
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Article
Effect of disorder on magnetoresistance oscillations in nanoperforated superconducting TiN films
The low-temperature transport properties of nanoperforated superconducting TiN films have been experimentally studied. A periodic dependence of the resistance on an external magnetic field, with a period corre...
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Article
Anomalous behavior near T c and synchronization of Andreev reflection in two-dimensional arrays of SNS junctions
The temperature dependences of resistance and the current-voltage characteristics of two-dimensional arrays of superconductor-normal metal-superconductor (SNS) junctions have been measured at low temperatures....
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Article
Superconductivity on the localization threshold and magnetic-field-tuned superconductor-insulator transition in TiN films
Temperature-and magnetic-field-dependent measurements of the resistance of ultrathin superconducting TiN films are presented. The analysis of the temperature dependence of the zero-field resistance indicates a...
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Article
Suppression of 2D superconductivity by the magnetic field: Quantum corrections vs. The superconductor-insulator transition
Magnetotransport of superconducting Nd2−x CexCuO4+y (NdCeCuO) films is studied in the temperature interval 0.3–30 K. The microscopic theory of the quantum corrections to conductivity, both in the Cooper and in th...
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Article
Subgap anomaly and above-energy-gap structure in chains of diffusive SNS junctions
We present the results of low-temperature transport measurements on chains of superconductor-normal constriction-superconductor (SNS) junctions fabricated on the basis of superconducting PtSi film. A comparati...
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Article
Microwave waveguide method for the measurement of electron mobility and conductivity in GaAs/AlGaAs heterostructures
The microwave waveguide method for contactless determination of the electron mobility and conductivity of thin active layers is reported. The method is based on relative measurements of the magnetic field depe...
