Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Venakides, Stephanos"'
The profile and energy of chiral skyrmions, found in magnetic materials with the Dzyaloshinskii-Moriya interaction, can be approximated by formulae obtained through asymptotic analysis in the limits of small and large skyrmion radius. Using fitting t
Externí odkaz:
http://arxiv.org/abs/2206.04761
We study the structure of an axially symmetric magnetic skyrmion in a ferromagnet with the Dzyaloshinskii-Moriya interaction. We examine the regime of large skyrmions and we identify rigorously the critical value of the dimensionless parameter at whi
Externí odkaz:
http://arxiv.org/abs/1910.04818
Chiral skyrmions are stable particle-like solutions of the Landau-Lifshitz equation for ferromagnets with the Dzyaloshinskii-Moriya (DM) interaction, characterized by a topological number. We study the profile of an axially symmetric skyrmion and giv
Externí odkaz:
http://arxiv.org/abs/1904.01408
Publikováno v:
Nonlinearity 32, 2392-2412 (2019)
We show that chiral symmetry breaking enables traveling domain wall solution for the conservative Landau-Lifshitz equation of a uniaxial ferromagnet with Dzyaloshinskii-Moriya interaction. In contrast to related domain wall models including stray-fie
Externí odkaz:
http://arxiv.org/abs/1806.02082
We develop a non-overlapping domain decomposition method (DDM) for scalar wave scattering by periodic layered media. Our approach relies on robust boundary-integral equation formulations of Robin-to-Robin (RtR) maps throughout the frequency spectrum,
Externí odkaz:
http://arxiv.org/abs/1801.09094
This work presents an efficient method for evaluation of wave scattering by doubly periodic diffraction gratings at or near "Wood anomaly frequencies". At these frequencies, one or more grazing Rayleigh waves exist, and the lattice sum for the quasi-
Externí odkaz:
http://arxiv.org/abs/1704.01017
Publikováno v:
In Physica D: Nonlinear Phenomena April 2021 418
Long-time limit studies of an obstruction in the g-function mechanism for semiclassical focusing NLS
Autor:
Belov, Sergey, Venakides, Stephanos
We consider the long-time properties of the an obstruction in the Riemann-Hilbert approach to one dimensional focusing Nonlinear Schr\"odinger equation in the semiclassical limit for a one parameter family of initial conditions. For certain values of
Externí odkaz:
http://arxiv.org/abs/1504.02359
Photons and excitons in a semiconductor microcavity interact to form exciton-polariton condensates. These are governed by a nonlinear quantum-mechanical system involving exciton and photon wavefunctions. We calculate all non-traveling harmonic solito
Externí odkaz:
http://arxiv.org/abs/1409.4067
Bose-Einstein condensates of exciton-polaritons are described by a Schr\"odinger system of two equations. Nonlinearity due to exciton interactions gives rise to a frequency band of dark soliton solutions, which are found analytically for the lossless
Externí odkaz:
http://arxiv.org/abs/1407.8451