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Nanoscale Superconductivity: physics and applications
P. 191-194.
In book
Minsk : World Scientific, 2013
Gurskiy A., Arutyunov K., Шаповалов Д. Л., Известия РАН. Серия физическая 2023 Т. 87 № 12 С. 1-5
The electron transport of non-equilibrium quasiparticles injected into superconducting aluminum from a normal metal has been experimentally studied at ultralow temperatures. We studied hybrid nanostructures in the form of a T-shaped normal metal electrode (copper) – a dielectric tunnel layer (aluminum oxide) – a superconducting fork (aluminum), which can be considered as a solid-state analogues ...
Added: August 28, 2023
Leuven : KU Leuven Methusalem Group, 2015
Added: March 22, 2016
Chen H., Zhao Z., Li W. et al., Optics Letters 2023 Vol. 48 No. 1 P. 81-84
Bolometers based on graphene have demonstrated
outstanding performance with high sensitivity and short
response time. In-situ adjustment of bolometers is very
important in various applications, but it is still difficult to
implement in many systems. Here we propose a gate-tunable
bolometer based on two strongly-coupled graphene
nanomechanical resonators. Both resonators are exposed to
the same light field, and we can measure the ...
Added: November 25, 2022
Arutyunov K., Lehtinen J. S., Radkevich A. A. et al., Communications Physics 2021 Vol. 4 Article 146
Rapid miniaturization of electronic devices and circuits demands profound understanding of
fluctuation phenomena at the nanoscale. Superconducting nanowires – serving as important
building blocks for such devices – may seriously suffer from fluctuations which tend to
destroy long-range order and suppress superconductivity. In particular, quantum phase slips
(QPS) proliferating at low temperatures may turn a quasi-one-dimensional superconductor
into a resistor ...
Added: October 24, 2021
Kalenkov M. S., Dolgirev P. E., Zaikin A., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 101 No. 18 P. 180505-1-180505-5
We demonstrate that a temperature gradient can strongly stimulate the thermoelectric signal, as well as
dc Josephson current, in multiterminal superconducting hybrid nanostructures. At temperatures T sufficiently
exceeding the Thouless energy of our device, both the supercurrent and the thermoinduced voltage are
dominated by the contribution from nonequilibrium low-energy quasiparticles and are predicted to decay slowly
(algebraically rather than ...
Added: May 10, 2020
Arutyunov K., Ramos-Alvares A., Semenov A. V. et al., Nanotechnology (IOP Publishing) 2016 Vol. 27 No. 47 P. 1-8
The topic of superconductivity in strongly disordered materials has attractedsignificant attention.
These materials appear to be rather promising for fabrication of various nanoscale devices such as
bolometers and transition edge sensors of electromagnetic radiation. The vividly debated subject of
intrinsic spatial inhomogeneity responsible for thenon-Bardeen–Cooper–Schrieffer relation
between the superconducting gap and the pairing potential is crucial both for understanding ...
Added: November 20, 2016
Titova N., Kardakova A., Tovpeko N. et al., IEEE Transactions on Applied Superconductivity 2017 Vol. 27 No. 4 P. 1-4
We have measured the electron-phonon energy-relaxation time, τeph, in superconducting boron-doped diamond films grown on silicon substrate by chemical vapor deposition. The observed electron-phonon cooling times vary from 160 ns at 2.70 K to 410 ns at 1.8 K following a T -2-dependence. The data are consistent with the values of τeph previously reported for single-crystal ...
Added: October 18, 2017
Arutyunov K., Gurskiy A., Artemov V. et al., Beilstein Journal of Nanotechnology 2022 Vol. 13 P. 1551-1557
Polydiphenylenephthalide (PDP) belongs to the class of carbocyclic organic electroactive polymers,
which exhibit electric conductive properties when an external electric field and/or mechanical stress is
applied. In this work, the transport properties of thin-film layered lead–PDP–lead structures were
experimentally studied in a wide temperature range. At sufficiently high temperatures, the current
voltage characteristics are satisfactorily described in terms of ...
Added: November 24, 2022
Arutyunov K., Беляев К. А., Артемов В. В. et al., Физика твердого тела 2023 Т. 65 № 1 С. 151-156
Polydiphenylenephthalide (PDF) belongs to the class of organic dielectrics, which exhibit electric conductive properties when an external electrostatic field and/or mechanical stress is applied. In this work, the transport properties of thin-film layered lead–PDF–lead structures were experimentally studied in a wide temperature range. At sufficiently high temperatures, the volt–ampere dependences are satisfactorily described in terms ...
Added: November 25, 2022
Arutyunov K., Lehtinen J., Physical Review Letters 2022 Vol. 128 Article 159702
Comment LEK1147 on ``Coulomb blockade and Bloch oscillations in superconducting Ti
nanowires'' by E. V. Il'ichev, V. V. Ryazanov, and O. V. Astafiev ...
Added: November 24, 2022
Dolgirev P. E., Kalenkov M. S., Zaikin Andrei D., Physica Status Solidi - Rapid Research Letters 2019 Vol. 13 No. 1 P. 1800252-1-1800252-5
We theoretically investigate coherent oscillations of the thermopower S as a function of the magnetic flux Ф in six-terminal Andreev interferometers. We demonstrate that the thermopower behavior is determined by a number of
contributions originating from the Josephson- and Aharonov–Bohm-like effects as well as from electron–hole asymmetry. The relative weight of these contributions depends on the ...
Added: October 26, 2018
Лехтинен Я., Lvov B. G., Arutyunov K., Физика твердого тела 2018 Т. 60 № 11 С. 2096-2099
Экспериментально исследовались вольт-амперные характеристики тонких сверхпроводящих нанопроводов из титана. Наиболее тонкие образцы, измеряемые высокомными контактами, обнаружили нетривиальное для сверхпроводника поведение: кулоновскую блокаду. Величина кулоновской щели коррелирует с частотой квантовых проскальзываний фазы. Наблюдение подтверждает идентичность квантовой динамики заряда в джозефсоновских контактах и в квазиодномерных сверхпроводящих каналах в режиме квантовых флуктуаций параметра порядка. ...
Added: October 30, 2018
Korneeva Y., Manova N., Florya I. et al., Physical Review Applied 2020 Vol. 13 P. 024011-1-024011-7
The photon count rate (PCR) ofsuperconducting single-photon detectors made ofMoxSi1-x films shaped
as a 2-μm-wide strip and a 115-nm-wide meander strip line is studied experimentally as a function of the dc biasing current at different values of the perpendicular magnetic field. For the wide strip, a crossover current Icross is observed, below which the PCR increases ...
Added: December 7, 2020
Gayduchenko I. A., Fedorov G. E., Moskotin M. V. et al., Nanotechnology 2018 Vol. 29 No. 24 P. 245204-245212
We report on the sub-terahertz (THz) (129–450GHz) photoresponse of devices based on single
layer graphene and graphene nanoribbons with asymmetric source and drain (vanadium and gold)
contacts. Vanadium forms a barrier at the graphene interface, while gold forms an Ohmic contact.
We find that at low temperatures (77K) the detector responsivity rises with the increasing
frequency of the incident ...
Added: October 31, 2018
Saveskul N. A., Titova N. A., Baeva E. et al., Physical Review Applied 2019 Vol. 12 No. 5 P. 1-10
We analyze the evolution of the normal and superconducting properties of epitaxial TiN films, characterized by high Ioffe-Regel parameter values, as a function of the film thickness. As the film thickness decreases, we observe an increase of the residual resistivity, that becomes dominated by diffusive surface scattering for d≤20nm. At the same time, a substantial thickness-dependent ...
Added: October 10, 2019
Lehtinen J. S., Lvov B. G., Arutyunov K., Physics of the Solid State 2018 Vol. 60 No. 11 P. 2135-2138
Volt-ampere characteristics of narrow superconducting titanum wires have been studied experimentally. The narrowest specimens measured by means of high-resistance contacts have revealed a behavior nontrivial for superconductors: the Coulomb blockade. The Coulomb gap size correlates with the frequency of quantum phase slips. The observation confirms the identity of quantum dynamics of charge in the Josephson ...
Added: September 29, 2018
Lounis B., Buzdin A. I., Physical Review B: Condensed Matter and Materials Physics 2022 Vol. 105 No. 2 Article L020504
We theoretically study the nonequilibrium dynamics of the order parameter of a superconducting ring inhomogeneously quenched through its transition temperature. Numerical simulations based on spectral decomposition of the time-dependent Ginzburg-Landau equation reveal that current-carrying superconducting states can be generated in the ring under certain fast local temperature quench conditions. We also show that illumination of ...
Added: December 10, 2022
Dolgirev P. E., Kalenkov M. S., Zaikin Andrei D., Scientific Reports 2019 Vol. 9 P. 1-9
Proximity induced quantum coherence of electrons in multi-terminal voltage-driven hybrid normalsuperconducting
nanostructures may result in a non-trivial interplay between topology-dependent
Josephson and Aharonov-Bohm effects. We elucidate a trade-off between stimulation of the voltagedependent
Josephson current due to non-equilibrium effects and quantum dephasing of quasiparticles
causing reduction of both Josephson and Aharonov-Bohm currents. We also predict phase-shifted
quantum coherent oscillations of ...
Added: March 11, 2019