Explanipedia

Fundamental solution of the time-space bi-fractional diffusion equation with a kinetic source term for anomalous transport Open

Anis Allagui, G. V. Paradezhenko, A. A. Pervishko, Dmitry Yudin, H. Benaoum · 2024

The purpose of this paper is to study the fundamental solution of the time-space bi-fractional diffusion equation incorporating an additional kinetic source term in semi-infinite space. The equation is a generalization of the integer-order…

Probabilistic tensor optimization of quantum circuits for the max-$k$-cut problem Open

G. V. Paradezhenko, A. A. Pervishko, D. I. Yudin · 2023

We propose a technique for optimizing parameterized circuits in variational quantum algorithms based on the probabilistic tensor sampling optimization. This method allows one to relax random initialization issues or heuristics for generati…

Time-space bi-fractional drift-diffusion equation for anomalous electrochemical transport Open

Anis Allagui, G. V. Paradezhenko, A. A. Pervishko, Dmitry Yudin, H. Benaoum · 2023

The Debye-Falkenhagen differential equation is commonly used as a mean-field macroscopic model for describing electrochemical ionic drift and diffusion in dilute binary electrolytes when subjected to a suddenly applied potential smaller th…

Tensor train optimization of parametrized quantum circuits Open

G. V. Paradezhenko, A. A. Pervishko, Dmitry Yudin · 2023

We examine a particular realization of derivative-free method as implemented on tensor train based optimization to the variational quantum eigensolver. As an example, we consider parametrized quantum circuits composed of a low-depth hardwa…

Thermal Annealing Driven Enhancement of Perpendicular Magnetic Anisotropy and the Interfacial Dzyaloshinskii–Moriya Interaction in Ultrathin Ru/Co/W/Ru Films Open

Aleksei Yu. Samardak, Alexander Kolesnikov, Maxim E. Stebliy, А.В. Герасименко, А. V. Sadovnikov , et al. · 2023

Spin-related effects discovered in ultrathin magnetic films generally have an interfacial nature. The quality of interfaces between a heavy metal and a ferromagnet is the main driver of surface anisotropy, antisymmetric exchange, chiral da…

Fractional Marcus-Hush-Chidsey-Yakopcic current-voltage model for redox-based resistive memory devices Open

G. V. Paradezhenko, Dmitrii Prodan, A. A. Pervishko, Dmitry Yudin, Anis Allagui · 2023

We propose a circuit-level model combining the Marcus-Hush-Chidsey electron current equation and the Yakopcic equation for the state variable for describing resistive switching memory devices of the structure metal-ionic conductor-metal. W…

An ab initio approach to anisotropic alloying into the Si(001) surface Open

D. V. Prodan, G. V. Paradezhenko, D. Yudin, A. A. Pervishko · 2022

Employing density functional theory calculations we explore initial stage of competitive alloying of co-deposited silver and indium atoms into a silicon surface. Particularly, we identify respective adsorption positions and activation barr…

Quantum-machine-learning channel discrimination Open

Andrey Kardashin, A. A. Pervishko, Dmitry Yudin, Jacob Biamonte · 2022

In the problem of quantum channel discrimination, one distinguishes between a given number of quantum channels, which is done by sending an input state through a channel and measuring the output state. This work studies applications of var…

Spin-hedgehog-derived electromagnetic effects in itinerant magnets Open

G. V. Paradezhenko, A. A. Pervishko, Nyayabanta Swain, Pinaki Sengupta, D. I. Yudin · 2022

We explore the effective spin model of a three-dimensional itinerant magnet with bilinear–biquadratic exchange interactions that supports a spin hedgehog lattice, highlighting its magneto-transport and magneto-optic properties.

Compositional Gradient Induced Enhancement of Dzyaloshinskii–Moriya Interaction in Pt/Co/Ta Heterostructures Modulated by Pt–Co Alloy Intralayers Open

Junho Park, Tae-Hyun Kim, Gyu Won Kim, Vladimir O. Bessonov, А. V. Telegin , et al. · 2022

Skyrmion-driven topological Hall effect in a Shastry-Sutherland magnet Open

Nyayabanta Swain, Munir Shahzad, G. V. Paradezhenko, A. A. Pervishko, D. I. Yudin , et al. · 2021

The Shastry-Sutherland model and its generalizations have been shown to capture emergent complex magnetic properties from geometric frustration in several quasi-two-dimensional quantum magnets. Using an $sd$ exchange model, we show here th…

Random iron-nickel alloys: From first principles to dynamic spin fluctuation theory Open

G. V. Paradezhenko, D. I. Yudin, A. A. Pervishko · 2021

We provide a systematic analysis of finite-temperature magnetic properties of random alloys Fe$_x$Ni$_{1-x}$ with the face-centered-cubic structure over a broad concentration range $x$. By means of the spin-polarized relativistic Korringa-…

Skyrmions drive topological Hall effect in a Shastry-Sutherland magnet Open

Nyayabanta Swain, Munir Shahzad, G. V. Paradezhenko, A. A. Pervishko, D. I. Yudin , et al. · 2021

The Shastry-Sutherland model and its generalizations have been shown to capture emergent complex magnetic properties from geometric frustration in several quasi-two-dimensional quantum magnets. Using an $sd$ exchange model, we show here th…

Numerical hardware-efficient variational quantum simulation of a soliton solution Open

Andrey Kardashin, A. A. Pervishko, Jacob Biamonte, Dmitry Yudin · 2021

Implementing variational quantum algorithms with noisy intermediate-scale quantum machines of up to a hundred qubits is nowadays considered as one of the most promising routes towards achieving a quantum practical advantage. In multiqubit …

Antichiral ferromagnetism Open

Filipp N. Rybakov, A. A. Pervishko, Olle Eriksson, Egor Babaev · 2021

Here by combining a symmetry-based analysis with numerical computations we\npredict a new kind of magnetic ordering - antichiral ferromagnetism. The\nrelationship between chiral and antichiral magnetic order is conceptually\nsimilar to the…

Benchmarking variational quantum simulation against an exact solution Open

Andrey Kardashin, A. A. Pervishko, Jacob Biamonte, Dmitry Yudin · 2021

Implementing variational quantum algorithms with noisy intermediate-scale quantum machines of up to a hundred of qubits is nowadays considered as one of the most promising routes towards achieving quantum practical advantage. In multiqubit…

Localized surface electromagnetic waves in CrI<sub>3</sub>-based magnetophotonic structures Open

A. A. Pervishko, Dmitry Yudin, Vijay Kumar Gudelli, Anna Delin, Olle Eriksson , et al. · 2020

Resulting from strong magnetic anisotropy two-dimensional ferromagnetism was recently shown to be stabilized in chromium triiodide, CrI 3 , in the monolayer limit. While its properties remain largely unexplored, it provides a unique materi…

An <i>ab initio</i> perspective on scanning tunneling microscopy measurements of the tunable Kondo resonance of the molecule on a gold substrate Open

Ivan I. Vrubel, A. A. Pervishko, Heike C. Herper, Barbara Brena, Olle Eriksson , et al. · 2020

With recent advances in the areas of nanostructure fabrication and molecular\nspintronics the idea of using single molecule magnets as building blocks for\nthe next generation electronic devices becomes viable. A particular example\nrepres…

Pushing Tensor Networks to the Limit Open

A. A. Pervishko, Jacob Biamonte · 2019

This $Physics$ viewpoint considers recent work by Tilloy and Cirac [Phys.\nRev. X 9, 021040 (2019), arXiv:1808.00976]; those authors overcame several past\nlimitations in the generalization of tensor networks to the continuum and\nproposed…

Light propagation in planar total internal reflection waveguide with quantum well Open

A. A. Pervishko · 2019

The paper presents theoretical study of an electromagnetic wave propagation in a planar total internal reflection waveguide with a centrally located quantum well. The calculation is based on transfer matrix method application that gives th…

Another view on Gilbert damping in two-dimensional ferromagnets Open

A. A. Pervishko, M. Baglai, Olle Eriksson, Dmitry Yudin · 2018

A keen interest towards technological implications of spin-orbit driven magnetization dynamics requests a proper theoretical description, especially in the context of a microscopic framework, to be developed. Indeed, magnetization dynamics…

A TbPc$_2$ molecule in close up: A new look at STM measurements from ab-initio perspective Open

Ivan I. Vrubel, A. A. Pervishko, Roman G. Polozkov, Heike C. Herper, Barbara Brena , et al. · 2018

With recent advances in the areas of nanostructures fabrication and molecular spintronics the idea of using single molecule magnets (SMMs) as building blocks for the next generation electronic devices becomes viable. SMMs represent a famil…

Effect of high-frequency pumping on thin-film topological insulators Open

A. A. Pervishko, D. I. Yudin, I. A. Shelykh · 2018

Thin-film topological insulators (TIs) with the thickness below 10 nm are characterized by the presence of a gap in the spectrum of topologically protected surface states. This unusual behavior, also known as anomalous finite size effects,…

Impact of high-frequency pumping on anomalous finite-size effects in three-dimensional topological insulators Open

A. A. Pervishko, Dmitry Yudin, I. A. Shelykh · 2018

Lowering of the thickness of a thin-film three-dimensional topological insulator down to a few nanometers results in the gap opening in the spectrum of topologically protected two-dimensional surface states. This phenomenon, which is refer…

Spin response to localized pumps: Exciton polaritons versus electrons and holes Open

Vincent Sacksteder, A. A. Pervishko, I. A. Shelykh · 2016

Polariton polarization can be described in terms of a pseudospin which can be\noriented along the $x,\\,y,$ or $z$ axis, similarly to electron and hole spin.\nUnlike electrons and holes where time-reversal symmetry requires that the\nspin-…

Control of spin dynamics in a two-dimensional electron gas by electromagnetic dressing Open

A. A. Pervishko, O. V. Kibis, S. Morina, I. A. Shelykh · 2015

We solved the Schr\\"odinger problem for a two-dimensional electron gas (2DEG)\nwith the Rashba spin-orbit interaction in the presence of a strong\nhigh-frequency electromagnetic field (dressing field). The found eigenfunctions\nand eigene…

Transport properties of a two-dimensional electron gas dressed by light Open

S. Morina, O. V. Kibis, A. A. Pervishko, I. A. Shelykh · 2015

We show theoretically that the strong interaction of a two-dimensional\nelectron gas (2DEG) with a dressing electromagnetic field drastically changes\nits transport properties. Particularly, the dressing field leads to the giant\nincrease …

Polarization shaping of Poincaré beams by polariton oscillations Open

David Colas, Lorenzo Dominici, Stefano Donati, A. A. Pervishko, T. C. H. Liew , et al. · 2015

We propose theoretically and demonstrate experimentally the generation of light pulses whose polarization varies temporally to cover selected areas of the Poincaré sphere with both tunable swirling speed and total duration (1 ps and 10 ps,…

A. A. Pervishko YOU? Author Swipe