Solitary objects on quantum spin rings
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https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2004121610
https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2004121610
Title: | Solitary objects on quantum spin rings |
Authors: | Shchelokovskyy, Pavlo |
Thesis advisor: | Prof. Dr. Klaus Bärwinkel apl. Prof. Dr. Heinz-Jürgen Schmidt apl. Prof. Dr. Jürgen Schnack |
Thesis referee: | apl. Prof. Dr. Klaus Betzler |
Abstract: | We investigate whether quantum spin rings with nearest-neighbor Heisenberg or Ising exchange interactions can host solitary states. Using complete diagonalization techniques the system is described without classical or semiclassical approximation. In this case definitions used in connection with classical solitons are not applicable, one needs to redefine what solitary objects on a quantum spin system with translational symmetry ought to be. Thus, we start our contribution by defining which quantum states possess solitary character. In addition we discuss useful observables in order to visualize solitary quantum states. Then we demonstrate for various quantum spin rings that solitary quantum states indeed exist, and that they are moving around the spin ring without changing their shape in the course of time. |
URL: | https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2004121610 |
Subject Keywords: | Molecular magnets; Heisenberg model; Spin rings; Solitons |
Issue Date: | 16-Dec-2004 |
Submission date: | 16-Dec-2004 |
Type of publication: | Dissertation oder Habilitation [doctoralThesis] |
Appears in Collections: | FB06 - E-Dissertationen |
Files in This Item:
File | Description | Size | Format | |
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E-Diss370_thesis.pdf | Präsentationsformat | 2,5 MB | Adobe PDF | E-Diss370_thesis.pdf View/Open |
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