Show simple item record

dc.contributor.authorMartinez Cuellar, Jose Luisen_US
dc.date.accessioned2007-05-15T15:26:54Z
dc.date.available2007-05-15T15:26:54Z
dc.date.issued1997-06-01T00:00:00Zen_US
dc.identifier.urihttp://hdl.handle.net/1993/1039
dc.description.abstractIn this thesis we examine the nature of three magnon excitations in alternating spin/bond ferromagnetic chains. We study a Hamiltonian that describes a chain (composed of two non-identical one-dimensional uniform and homogeneous sublattices) with alternating spin magnitudes, S and $S\sp\prime$, and alternating nearest neighbor interactions, $J\sb1$ and $J\sb2.$ The Recursion Method is used to locate the bound states and their relationship to the three-magnon continuum. The specific cases studied are the S = $S\sp\prime$ = 1/2, S = $2S\sp\prime$ = 1, and S = $S\sp\prime$ = 1 alternating spin chains. We consider not only the effects of spin alternation but also of varying strengths. For each case, we studied different bond sets, more exactly, $J\sb1$ = 1 and $J\sb2$ equal to 0, 1/4, 1/2 and 1.en_US
dc.format.extent4316691 bytes
dc.format.extent184 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleThree magnon excitations in alternating quantum spin/bond chainsen_US
dc.typeinfo:eu-repo/semantics/masterThesis
dc.typemaster thesisen_US
dc.degree.disciplinePhysics and Astronomyen_US
dc.degree.levelMaster of Science (M.Sc.)en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record