A5026865478- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Magnetic properties of thin films
- Topological Materials and Phenomena
- Semiconductor Quantum Structures and Devices
- Terahertz technology and applications
- Graphene research and applications
- Magnetic Properties and Applications
- Semiconductor materials and interfaces
- 2D Materials and Applications
- Spectroscopy and Laser Applications
- Magnetic and transport properties of perovskites and related materials
- Quantum Information and Cryptography
- Material Properties and Applications
- Electronic and Structural Properties of Oxides
- Theoretical and Computational Physics
- Plasma Diagnostics and Applications
- Surface and Thin Film Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Neural Networks and Reservoir Computing
- Laser-induced spectroscopy and plasma
- Ferroelectric and Piezoelectric Materials
- Microwave-Assisted Synthesis and Applications
- Vacuum and Plasma Arcs
- Nanomaterials and Printing Technologies
Russian Quantum Center
2015-2025
Admiral Makarov State University of Maritime and Inland Shipping
2021-2024
Institute of Solid State Physics
2024
Osipyan Institute of Solid State Physics RAS
2013-2023
Russian Academy of Sciences
1997-2023
Georgi Nadjakov Institute of Solid State Physics
2023
Institute of Biotechnology and Veterinary Medicine
2021
Scientific Center of RAS in Chernogolovka
2020
Voronezh State Technical University
2018-2019
Institute of Applied Physics
1979-2018
We describe fabrication and testing of composite flux qubits combining Nb- Al-based superconducting circuit technology. This hybrid approach to making allows for employing pi-phase shifters fabricated using well-established Nb-based technology superconductor-ferromagnet-superconductor Josephson junctions. The important feature here is obtain high interface transparency between Nb Al layers without degrading sub-micron shadow mask. achieve this by in-situ Ar etching e-beam gun....
We experimentally investigate charge transport through the interface between a niobium superconductor and three-dimensional WTe$_2$ Weyl semimetal. In addition to classical Andreev reflection, we observe sharp non-periodic subgap resistance resonances. From an analysis of their positions, magnetic field temperature dependencies, can interpret them as analog Tomasch oscillations for along topological surface state across region proximity-induced superconductivity at Nb-WTe$_2$ interface....
We use an atomistic spin model derived from density functional theory calculations for the ultra-thin film Pd/Fe/Ir(111) to show that temperature induces coexisting non-zero skyrmion and antiskyrmion densities. apply parallel tempering Monte Carlo method in order reliably compute thermodynamical quantities B–T phase diagram presence of frustrated exchange interactions. evaluate critical temperatures using topological susceptibility. depend on magnetic field contrast previous work. In total,...
The transport properties of a nanobridge superconducting quantum interference device made Al/Pt bilayer have been studied. Measurement and approximation the voltage‐field dependencies allow to estimate inductance structure. It is found that this value significantly exceeds expected geometric exhibits an atypical temperature dependence. To explain effect, microscopic model electron in SN bilayers developed, considering proximity available regimes current distribution are described. measured...
We report on a fabrication method and electron-transport measurements for submicron Josephson junctions formed by Cu nanowires coupling to superconducting planar Nb electrodes. The with resistivity of ρCu≃1 μΩ cm at low temperatures consisting single-crystalline segments have been obtained templated electrodeposition using anodic aluminum oxide as porous matrix. current-voltage characteristics the devices studied function temperature magnetic field. For all junctions, critical current...
The synthesis of nanopowders terbia compounds with scandia, yttria, and lutetia was carried out using a self-propagating high-temperature method involving mixture nitrates metals glycine as precursor. nanopowder phase transformations were investigated X-ray diffraction analysis. It found that has negligible effect on the formation in terbia. On other hand, yttrium scandium ions significantly suppressed crystallization. densification kinetics Tb2O3 microstructure ceramics after microwave...
We investigate electron transport through the interface between a niobium superconductor and edge of two-dimensional semimetal, realized in 20~nm wide HgTe quantum well. Experimentally, we observe that typical behavior single Andreev contact is complicated by both pronounced zero-bias resistance anomaly shallow subgap oscillations with $1/n$ periodicity. These results are demonstrated to be independent superconducting material should regarded as specific 2D semimetal proximity...
Electrochemical aspects of Bi electrocrystallization from a bath containing bismuth nitrate in mixture ethylene glycol and water are addressed. Bismuth nanowires with diameters 50-120 nm length up to few dozen microns were prepared by electrodeposition into the pores anodic aluminium oxide templates. Crystal structure morphology electrodeposited materials characterized using electron microscopy, selected area diffraction, X-ray diffraction analysis. Factors affecting formation single or...
Abstract In this article the design of light-emitting diode lamps with optimum thermal operating mode LEDs used are considered. Thermal analysis model is performed using SolidWorks Simulation software.
Critical collapsing of the recently discovered multielectron Coulomb gap (CG) in moderately compensated neutron transmutation doped (NTD) Ge:Ga and metal–insulator (MI) transition this system had been under investigation. The results obtained are compared with those received for strongly weakly Ge, where single electron CG takes place far from MI transition. Independently single- or origin all gaps, as deduced by variable range hopping (VRH) spectroscopy procedure, turned out to be critical...
Domain structure and kinetics of the magnetization reversal in Py/Nb bilayers grown with lift-off lithography have been studied using visualization by magneto-optical indicator film technique. Various types domain walls switching behavior are observed depending both on substrate thickness. The transformations agreement model, which takes into account effective surface anisotropy governed roughness, while influence misfit-induced elastic strain is found to be negligible.
Abstract Superconducting proximity devices using low-dimensional semiconducting elements enable a ballistic regime in the transport. The use of topological insulators such is considered promising owing to peculiar transport properties these materials offer, as well hope inducing superconductivity and Majorana phenomena via effects. Here we demonstrate fabrication superconducting Josephson integrating nanocrystals single Bi 2 Te 2.3 Se 0.7 with thickness few unit cells. Single junctions...
We study operation of a superconducting quantum interference devices (SQUIDs) based on new bilayer material. They can be used for the ultra-sensitive detection magnetic momentum at temperatures down to milliKelvin range. Typically, thermal origin hysteresis symmetric SQUID current-voltage curves limits operating T>0.6Tc. material fabrication, namely proximity-coupled superconductor/normal-metal (S/N) bilayers (aluminum 25 nm/platinum 5 nm). Because nm Pt-layer, Al/Pt show nonhysteretic...
Abstract We examine the influence of superconductivity on magneto-transport properties a ferromagnetic Ni nanowire connected to Nb electrodes. show experimentally and confirm theoretically that Nb/Ni interface plays an essential role in electron transport through device. Just below superconducting transition, strong inverse proximity effect from suppresses correlations at interfaces, resulting conventional anisotropic magneto-resistive response. At lower temperatures however, electrodes...
We use a Mach-Zehnder quantum Hall interferometer of novel design to investigate the interference effects at fractional filling factors.Our device brings together advantages usual and Fabry-Perot interferometers.It realizes simplest-for-analysis scheme, free from Coulomb blockade effects.By contrast standard realization, our does not contain an etched region inside loop.For first time for demonstrates oscillations with Φ * = e/e Φ0 Φ0/ν periodicity factor 1/3.This result indicates that we...
We report the magnetoresistance study of an individual polycrystalline nickel nanowire at temperature T=10K. Transport measurements have indicated a large coercive field nanowire, justified by structure studied sample, where both magnetocrystalline anisotropy randomly oriented grains and effective uniaxial grain boundaries enhance field. Magnetization reversal with micromagnetic simulations occurs via curling mode when vortices are nucleated propagate along propagation is inhibited...