output
19982025
most citedPseudogap and Spin Fluctuations in the Normal State of Electron-Doped Cuprates

124 citations

27 papers

hep-ex2025

Search for an eV-scale sterile neutrino with the first six detection units of KM3NeT/ORCA

KM3NeT Collaboration, O. Adriani, A. Albert +285

The existence of an eV-scale sterile neutrino has been proposed to explain several anomalous experimental results obtained over the course of the past 25 years. The first search fo…

astro-ph.HE2025

Constraining gamma-ray burst parameters with the first ultra-high energy neutrino event KM3-230213A

KM3NeT Collaboration, O. Adriani, A. Albert +278

Context: The detection of the highest energy neutrino observed to date by KM3NeT, with an estimated energy of 220 PeV, opens up new possibilities for the study and identification o…

cs.CR2025★ 1 cited

Using hypervisors to create a cyber polygon

Dmytro Tymoshchuk, Vasyl Yatskiv

Cyber polygon used to train cybersecurity professionals, test new security technologies and simulate attacks play an important role in ensuring cybersecurity. The creation of such…

cs.CR2024★ 3 cited

Interactive cybersecurity training system based on simulation environments

Dmytro Tymoshchuk, Vasyl Yatskiv, Vitaliy Tymoshchuk +1

Rapid progress in the development of information technology has led to a significant increase in the number and complexity of cyber threats. Traditional methods of cybersecurity tr…

cond-mat.soft2024★ 1 cited

Percolation connectivity in deposits obtained using competitive random sequential adsorption of binary disk mixtures

N. I. Lebovka, M. R. Petryk, N. V. Vygornitskii

Connectedness percolation phenomena in the two-dimensional (2D) packing of binary mixtures of disks with different diameters were studied numerically. The packings were produced us…

cond-mat.stat-mech2023★ 9 cited

Two-stage random sequential adsorption of discorectangles and disks on a two-dimensional surface

Nikolai Lebovka, Mykhaylo Petryk, Mykhailo Tatochenko +1

The different variants of two-stage random sequential adsorption (RSA) models for packing of disks and discorectangles on a two-dimensional (2D) surface were investigated. In the S…

cond-mat.mes-hall2020★ 6 cited

Interaction of electrons with acoustic phonons in AlN/GaN resonant tunnelling nanostructures at different temperatures

I. V. Boyko, M. R. Petryk

The theory of the interaction of electrons with acoustic phonons in multilayer nitride-based AlN/GaN nanostructures was developed for the first time at using the met…

quant-ph2018★ 11 cited

Analytical method for calculation of the potential profiles of nitride-based resonance tunneling structures

I. V. Boyko

Using the effective mass model for an electron and the dielectric continuum model, analytical solutions of the self-consistent Schrödinger-Poisson system of equations are obtained.…

cond-mat.str-el2017★ 3 cited

-electrons contribution to cohesive energy of -metals

L. Didukh

In this paper a model for -subsystem of transition -metals has been proposed and used for calculation of the cohesive energy dependent on -band filling of particular me…

cond-mat.str-el2011★ 2 cited

Phase Diagram of Metal-Insulator Transition in System with Anderson-Hubbard Centers

Yuriy Skorenkyy, Leonid Didukh, Oleksandr Kramar +1

The model of a strongly correlated system in which periodically spaced Anderson-Hubbard centers are introduced into narrow-band metal is considered. Besides the interactions betwee…

cond-mat.str-el2005★ 1 cited

Magnetic field dependence of conductivity and effective mass of carriers in a model of Mott-Hubbard material

L. Didukh, O. Kramar, Yu. Skorenkyy +1

The influence of external magnetic field on a static conductivity of Mott-Hubbard material which is described by model with correlated hopping of electrons has been investigate…

cond-mat.str-el2004★ 17 cited

Strong- and weak-coupling mechanisms for pseudogap in electron-doped cuprates

V. Hankevych, B. Kyung, A-M. Dare +2

Using the two-particle self-consistent approach and cluster perturbation theory for the two-dimensional t-t'-t''-U Hubbard model, we discuss weak- and strong-coupling mechanisms fo…

cond-mat.str-el2003★ 124 cited

Pseudogap and Spin Fluctuations in the Normal State of Electron-Doped Cuprates

B. Kyung, V. Hankevych, A. -M. Dare +1

We present reliable many-body calculations for the t-t'-t''-U Hubbard model that explain in detail the results of recent angle-resolved photoemission experiments on electron-doped…

cond-mat.str-el2003★ 30 cited

Weak ferromagnetism and other instabilities of the two-dimensional t-t' Hubbard model at Van Hove fillings

V. Hankevych, B. Kyung, A. -M. S. Tremblay

We investigate magnetic and superconducting instabilities of the two-dimensional t-t' Hubbard model on a square lattice at Van Hove densities from weak to intermediate coupling by…

cond-mat.str-el2002★ 57 cited

Pomeranchuk and other Instabilities in the t-t' Hubbard model at the Van Hove Filling

V. Hankevych, I. Grote, F. Wegner

We present a stability analysis of the two-dimensional t-t' Hubbard model for various values of the next-nearest-neighbor hopping t', and electron concentrations close to the Van H…

cond-mat.str-el2001

On metallic ferromagnetism of a generalized Hubbard model with correlated hopping

L. Didukh, O. Kramar

In the paper a possibility of metallic ferromagnetic state realization in a generalized Hubbard model with more complete accounting of electron-electron interactions, in particular…

cond-mat.str-el2001★ 16 cited

Ground state ferromagnetism in a doubly orbitally degenerate model

L. Didukh, Yu. Skorenkyy, V. Hankevych +1

In the present paper the ground state of a double orbitally degenerate model at weak intra-atomic interaction is studied using the Green functions method. Beside the diagonal matri…

cond-mat.str-el2000

Ground state energy of metallic ferromagnet in a generalized Hubbard model

L. Didukh, O. Kramar, Yu. Skorenkyy

In the present work ferromagnetic ordering in the Hubbard model generalized by taking into account the inter-atomic exchange interaction and correlated hopping in partially filled…

cond-mat.str-el2000★ 1 cited

Pressure-Temperature Phase Diagram of Generalized Hubbard Model with Correlated Hopping at Half-Filling

Leonid Didukh, Vasyl Hankevych

In the present paper pressure-temperature phase diagram of a generalized Hubbard model with correlated hopping in a paramagnetic state at half-filling is determined by means of the…

cond-mat.str-el2000★ 3 cited

Some Low-Temperature Properties of a Generalized Hubbard Model with Correlated Hopping

L. Didukh, V. Hankevych, Yu. Skorenkyy

In the present paper we study some correlation effects in a generalized Hubbard model with correlated hopping within low-temperature region using a generalized mean-field approxima…

cond-mat.str-el2000

Electron Correlations in Narrow Energy Bands: Ground State Energy and Metal-Insulator Transition

Leonid Didukh, Yuriy Skorenkyy

The electron correlations in narrow energy bands are examined in framework of the Hubbard model. The single-particle Green function and energy spectrum are obtained in paramagnetic…

cond-mat.str-el2000★ 1 cited

A New Two-Pole Approximation in the Hubbard Model. Metal-Insulator Transition

Leonid Didukh

A new two-pole approximation, which allows to describe the transition from an insulating state to a metallic one at increase of bandwidth, and also the observable in some compounds…

cond-mat.str-el1999

On Chemical Potential of a Generalized Hubbard Model with Correlated Hopping at Half-Filling

Leonid Didukh, Vasyl Hankevych

In the present paper we study chemical potential of a generalized Hubbard model with correlated hopping at half-filling using a generalized mean-field approximation. For the specia…

cond-mat.str-el1999★ 24 cited

Metal-insulator transition in a doubly orbitally degenerate model with correlated hopping

L. Didukh, Yu. Skorenkyy, Yu. Dovhopyaty +1

In the present paper we propose a doubly orbitally degenerate narrow-band model with correlated hopping. The peculiarity of the model is taking into account the matrix element of e…