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Healthy Research Rewards
ResearchHub is incentivizing healthy research behavior. At this time, first authors of open access papers are eligible for rewards. Visit the publications tab to view your eligible publications.
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ДМ
Дмитрий Марченко
Author with expertise in Coronavirus Disease 2019
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Upvotes received:
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Publications:
30
(7% Open Access)
Cited by:
59,425
h-index:
0
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i10-index:
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Reputation
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Overview
Publications
30
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Publications
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Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China
Chaolin Huang
et al.
Jan 24, 2020
Epidemiology
Internal Medicine
0
Paper
Epidemiology
49,183
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Clinical course and outcomes of critically ill patients with SARS-CoV-2 pneumonia in Wuhan, China: a single-centered, retrospective, observational study
Xiaobo Yang
et al.
Feb 24, 2020
Internal Medicine
Emergency Medicine
0
Paper
Internal Medicine
10,242
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Generalized Statistics and High Tc Superconductivity
Александр Викторович Максимов
et al.
May 29, 2001
Introducing the generalized, non-extensive statistics proposed byTsallis[1988], into the standard s-wave pairing BCS theory of superconductivityin 2D yields a reasonable description of many of the main properties of hightemperature superconductors, provided some allowance is made for non-phononmediated interactions.
Physics
0
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Physics
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The window Josephson junction: a coupled linear nonlinear system
Marco Colizzi
et al.
Jun 5, 2001
We investigate the interface coupling between the 2D sine-Gordon equation andthe 2D wave equation in the context of a Josephson window junction using afinite volume numerical method and soliton perturbation theory. The geometry ofthe domain as well as the electrical coupling parameters are considered. Whenthe linear region is located at each end of the nonlinear domain, we derive aneffective 1D model, and using soliton perturbation theory, compute the fixedpoints that can trap either a kink or antikink at an interface between twosine-Gordon media. This approximate analysis is validated by comparing with thesolution of the partial differential equation and describes kink motion in the1D window junction. Using this, we analyze steady state kink motion and derivevalues for the average speed in the 1D and 2D systems. Finally we show howgeometry and the coupling parameters can destabilize kink motion.
Physics
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Physics
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Tunneling current characteristics in bilayer quantum Hall systems
Kellie Grant
et al.
Jul 1, 2001
Weakly disordered bilayer quantum Hall systems at filling factor $\nu=1$ showspontaneous interlayer phase coherence if the layers are sufficiently closetogether. We study the collective modes in the system, the current-voltagecharacteristics and their evolution with an in-plane magnetic field in thephase-coherent regime.
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Magnetoexcitons in quantum-ring structures: a novel magnetic interference effect
David McDaid
et al.
Nov 1, 2001
A novel magnetic interference effect is proposed for a neutral, butpolarizable exciton in a quantum ring with a finite width. The magneticinterference effect originates from the nonzero dipole moment in the exciton.The ground state of exciton acquires a nonzero angular momentum with increasingnormal magnetic field. This leads to the suppression of the photoluminescencein defined windows of the magnetic field.
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Remarks on $(1-q)$ expansion and factorization approximation in the Tsallis nonextensive statistical mechanics
Piet Bracke
et al.
Nov 1, 2001
The validity of (1-q) expansion and factorization approximations are analysedin the framework of Tsallis statistics. We employ exact expressions forclassical independent systems (harmonic oscillators) by considering theunnormalized and normalized constrainsts. We show that these approxiamtions cannot be accurate in the analysis of systems with many degrees of freedom.
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Giant vortices in small mesoscopic disks: an approximate description
Kellie Grant
et al.
Nov 19, 2001
We present an approximate description of the giant vortex state in a thinmesoscopic superconducting disk within the phenomenological Ginzburg-Landauapproach. Analytical asymptotic expressions for the energies of the states withfixed vorticity are obtained when a small magnetic flux is accumulated in thedisk. The spectrum of the lowest Landau levels of such a disk is alsodiscussed.
Physics
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Paper
Physics
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Niobium and niobium nitride SQUIDs based on anodized nanobridges made with an Atomic Force Microscope
Мирон Растов
et al.
Nov 19, 2001
We present a fabrication method of superconducting quantum interferencedevices (SQUIDs) based on direct write lithography with an Atomic ForceMicroscope (AFM). This technique involves maskless local anodization of Nb orNbN ultrathin films using the voltage biased tip of the AFM. The SQUIDs are ofweak-link type, for which two geometries have been tested: Dayem and variablethickness nanobridges. The magnetic field dependence of the maximumsupercurrent Ic(flux) in resulting SQUIDs is thoroughly measured for differentweak link geometries and for both tested materials. It is found that themodulation shape and depth of Ic(flux) curves are greatly dependent on the weaklink size. We analyze the results taking into account the kinetic inductance ofnanobridges and using the Likharev-Yakobson model. Finally we show that thepresent resolution reached by this technique (20nm) enables us to fabricate Nbweak-links which behavior approaches those of ideal Josephson junctions.
Physics
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Physics
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Layer-resolved optical conductivity of Co|Pt multilayers
Kellie Grant
et al.
Jan 22, 2002
The complex optical conductivity tensor is calculated for the Co|Pt systemsby applying a contour integration technique within the framework of thespin-polarized relativistic screened Korringa-Kohn-Rostoker method. It is shownthat the optical conductivity of the Co|Pt multilayer systems is dominated bycontributions arising from the Pt cap and/or substrate layers.
Materials Science
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Materials Science
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