920 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Academy of Sciences of UkraineUA354 papers
- Lviv UniversityUA86 papers
- Coventry UniversityGB63 papers
- Lviv Polytechnic National UniversityUA61 papers
- Johannes Kepler University of LinzAT57 papers
- Centre National de la Recherche ScientifiqueFR55 papers
- Otto-von-Guericke-Universität MagdeburgDE42 papers
- University of Pavol Jozef ŠafárikSK27 papers
- Université de LorraineFR26 papers
- Georgetown UniversityUS21 papers
- Max Planck Institute for the Physics of Complex SystemsDE20 papers
- Institute of Physical ChemistryPL16 papers
25 papers · 1 filter
Influence of long-range correlated surface and near the surface disorder on the process of adsorption of long-flexible polymer chains
Z. Usatenko, J. -U. Sommer
The influence of long-range correlated surface and decaying near surface disorder with quenched defects is studied. We consider a correlation function for the defects of the form $…
Finite size induced phenomena in 2D classical spin models
O. Kapikranian, B. Berche, Yu. Holovatch
We make a short overview of the recent analytic and numerical studies of the classical two-dimensional XY and Heisenberg models at low temperatures. Special attention is being paid…
The 2D XY model on a finite lattice with structural disorder: quasi-long-range ordering under realistic conditions
Oleksandr Kapikranian, Bertrand Berche, Yurij Holovatch
We present an analytic approach to study concurrent influence of quenched non-magnetic site-dilution and finiteness of the lattice on the 2D XY model. Two significant deeply connec…
Universal properties of highly frustrated quantum magnets in strong magnetic fields
Oleg Derzhko, Johannes Richter, Andreas Honecker +1
The purpose of the present paper is two-fold. On the one hand, we review some recent studies on the low-temperature strong-field thermodynamic properties of frustrated quantum spin…
Perturbation expansion for the diluted two-dimensional XY model
Oleksandr Kapikranian, Bertrand Berche, Yurij Holovatch
We study the quasi-long-range ordered phase of a 2D XY model with quenched site-dilution using the spin-wave approximation and expansion in the parameter which characterizes the de…
Quasi-long-range ordering in a finite-size 2D Heisenberg model
Oleksandr Kapikranian, Bertrand Berche, Yurij Holovatch
We analyse the low-temperature behaviour of the Heisenberg model on a two-dimensional lattice of finite size. Presence of a residual magnetisation in a finite-size system enables u…
Charge and spin dynamics in a two dimensional electron gas
A Pugzlys, P J Rizo, K Ivanin +5
A number of time resolved optical experiments probing and controlling the spin and charge dynamics of the high mobility two-dimensional electron gas in a GaAs/AlGaAs heterojunction…
Coherent amplitudon generation in K_0.3MoO_3 through ultrafast inter-band quasi particle decay
D. M. Sagar, A. A. Tsvetkov, D. Fausti +2
The charge density wave system K_0.3MoO_3 has been studied using variable energy pump-probe spectroscopy, ellipsometry, and inelastic light scattering. The observed transient refle…
Free Energy and Equation of State of Ising-like Magnet Near the Critical Point
M. P. Kozlovskii, I. V. Pylyuk, O. O. Prytula
The description of a three-dimensional Ising-like magnet in the presence of an external field in the vicinity of the critical point by the collective variables method is proposed.…
Electronic thermal transport in strongly correlated multilayered nanostructures
J. K. Freericks, V. Zlatic, A. M. Shvaika
The formalism for a linear-response many-body treatment of the electronic contributions to thermal transport is developed for multilayered nanostructures. By properly determining t…
Cancellation of oscillatory behaviors in incommensurate region
Takahiro Murashima, Kiyohide Nomura
In several frustrating systems incommensurate behaviors are often observed. For the S=1 bilinear-biquadratic model, we show that the main oscillatory behavior, which is proportiona…
Correlation functions in ionic liquid at coexistence with ionic crystal. Results of the Brazovskii-type field theory
O. Patsahan, A. Ciach
Correlation functions in the restricted primitive model are calculated within a field-theoretic approach in the one-loop self-consistent Hartree approximation. The correlation func…
The effects of the symmetric and antisymmetric anisotropies on the dynamics of the spin-1/2 XY chain
O. Derzhko, T. Verkholyak, T. Krokhmalskii +1
The dynamic properties of the spin-1/2 anisotropic XY chain with the Dzyaloshinskii-Moriya (DM) interaction in a transverse field are investigated. Using the Jordan-Wigner transfor…
Network Harness: Metropolis Public Transport
Christian von Ferber, Taras Holovatch, Yurij Holovatch +1
We analyze the public transport networks (PTNs) of a number of major cities of the world. While the primary network topology is defined by a set of routes each servicing an ordered…
Phase coexistence in the hard-sphere Yukawa chain fluid with chain length polydispersity: High temperature approximation
S. P. Hlushak, Yu. V. Kalyuzhnyi
High temperature approximation (HTA) is used to describe the phase behavior of polydisperse multi-Yukawa hard-sphere chain fluid mixtures with chain length polydispersity. It is de…
A mesoscopic field theory of ionic systems versus a collective variable approach
O. Patsahan, I. Mryglod
We establish a link between the two functional approaches: a mesoscopic field theory developed recently by A.Ciach and G.Stell [A. Ciach and G. Stell, J. Mol. Liq. 87 (2000) 253] f…
Finite-temperature order-disorder phase transition in a frustrated bilayer quantum Heisenberg antiferromagnet in strong magnetic fields
Johannes Richter, Oleg Derzhko, Taras Krokhmalskii
We investigate the thermodynamic properties of the frustrated bilayer quantum Heisenberg antiferromagnet at low temperatures in the vicinity of the saturation magnetic field. The l…
Fluctuation-induced forces in periodic slabs: Breakdown of epsilon expansion at the bulk critical point and revised field theory
H. W. Diehl, Daniel Grüneberg, M. A. Shpot
Systems described by -component models in a slab geometry of finite thickness are considered at and above their bulk critical temperature $T_{c,…
Entropy-induced separation of star polymers in porous media
V. Blavats'ka, C. von Ferber, Yu. Holovatch
We present a quantitative picture of the separation of star polymers in a solution where part of the volume is influenced by a porous medium. To this end, we study the impact of lo…
On the spectral relations for multitime correlation functions
A. M. Shvaika
A general approach for derivation of the spectral relations for the multitime correlation functions is presented. A special attention is paid to the consideration of the non-ergodi…
Field-theoretic description of ionic crystallization in the restricted primitive model
A. Ciach, O. Patsahan
Effects of charge-density fluctuations on a phase behavior of the restricted primitive model (RPM) are studied within a field-theoretic formalism. We focus on a -line of continu…
Universal low-temperature behavior of frustrated quantum antiferromagnets in the vicinity of the saturation field
Oleg Derzhko, Johannes Richter
We study the low-temperature thermodynamic properties of a number of frustrated quantum antiferromagnets which support localized magnon states in the vicinity of the saturation fie…
Local and cluster critical dynamics of the 3d random-site Ising model
D. Ivaneyko, J. Ilnytskyi, B. Berche +1
We present the results of Monte Carlo simulations for the critical dynamics of the three-dimensional site-diluted quenched Ising model. Three different dynamics are considered, the…
Large-j Expansion Method for Two-Body Dirac Equation
Askold Duviryak
By using symmetry properties, the two-body Dirac equation in coordinate representation is reduced to the coupled pair of radial second-order differential equations. Then the large-…