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Controlling quantum breathers in Heisenberg ferromagnetic spin chains via an oblique magnetic field
Author(s) -
Tang Bing,
Li DeJun,
Tang Yi
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350353
Subject(s) - breather , oblique case , ferromagnetism , quantum , condensed matter physics , physics , spin (aerodynamics) , magnetic field , field (mathematics) , quantum mechanics , mathematics , nonlinear system , philosophy , linguistics , pure mathematics , thermodynamics
An analytical study on controlling quantum breathers in one‐dimensional ferromagnetic XXZ spin chains through an oblique magnetic field is presented in this paper. Based on the time‐dependent Hartree approximation and the semidiscrete multiple‐scale method, we prove the existence of quantum breathers, analyze conditions for their appearance, and discuss their properties. Our results show that the appearance and features of quantum breathers can be controlled by varying the value of the oblique angle θ .