Dipole and quadrupole skyrmions in S=1 (pseudo)spin systems / Mikushina NA,Moskvin AS // PHYSICS LETTERS A. - 2002. - V. 302, l. 1. - P. 8-16.

ISSN/EISSN:

0375-9601 / нет данных

Type:

Article

Abstract:

In terms of spin coherent states we have investigated topological defects in 2D S = 1 (pseudo)spin quantum system with the bilinear and biquadratic isotropic exchange in the continuum limit. The proper Hamiltonian of the model can be written as bilinear on the generators of SU(3) group (Gell-Mann matrices). Knowledge of such group structure enables us to obtain some new exact analytical results. The analysis of the proper classical model and its topology allows to get different skyrmionic solutions with finite energy and the spatial distribution of spin-dipole and/or spin-quadrupole moments termed as dipole, quadrupole, and dipole-quadrupole skyrmions, respectively. Among the latter we would like note the in-plane vortices with the in-plane distribution of spin moment, varying spin length, and the non-trivial distribution of spin-quadrupole moments. (C) 2002 Elsevier Science B.V. All rights reserved.

Author keywords:

2D classical and quantum spin systems; topological defects; skyrmions VORTICES; SOLITONS; LATTICES; HE-3

DOI:

10.1016/S0375-9601(02)01084-8

Web of Science ID:

ISI:000178260600002

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 9
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Article-Number	PII S0375-9601(02)01084-8
Keywords-Plus	VORTICES; SOLITONS; LATTICES; HE-3
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	a.moskvin@ifw-dresden.de
Number-of-Cited-References	14
Journal-ISO	Phys. Lett. A
Doc-Delivery-Number	598DR