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dc.contributor.advisorPokrovsky, Valery L.
dc.creatorSinitsyn, Nikolai
dc.date.accessioned2004-09-30T01:46:31Z
dc.date.available2004-09-30T01:46:31Z
dc.date.created2003-05
dc.date.issued2004-09-30
dc.identifier.urihttp://hdl.handle.net/1969.1/216
dc.description.abstractNanoscale systems have sizes intermediate between atomic and macroscopic ones. Therefore their treatment often requires a combination of methods from atomic and condensed matter physics. The conventional Landau-Zener theory, being a powerful tool in atomic physics, often fails to predict correctly nonadiabatic transition probabilities in various nanostructures because it does not include many-body effects typical for mesoscopics. In this research project the generalizations of the Landau-Zener theory that solve this problem were studied. The multistate, multiparticle and nonunitary extensions of the theory have been proposed and investigated. New classes of exactly solvable models have been derived. I discuss their applications in problems of the molecular condensate dissociation and of the driven charge transport. In application to the physics of nanomagnets new approaches in modeling the influence of the environment on the Landau-Zener evolution are proposed and simple universal formulas are derived for the extensions of the theory that include the coupling to noise and the nuclear spin bath.en
dc.format.extent503243 bytesen
dc.format.extent173224 bytesen
dc.format.mediumelectronicen
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherTexas A&M University
dc.subjectLandau-Zener theoryen
dc.subjectexactly solvable modelsen
dc.subjectmolecular nanomagnetsen
dc.titleGeneralizations of the Landau-Zener theory in the physics of nanoscale systemsen
dc.typeBooken
dc.typeThesisen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameDoctor of Philosophyen
thesis.degree.levelDoctoralen
dc.contributor.committeeMemberNaugle, Donald G.
dc.contributor.committeeMemberPoltoratski, Alexei
dc.contributor.committeeMemberAllen, Ronald E.
dc.contributor.committeeMemberHu, Chia-Ren
dc.type.genreElectronic Dissertationen
dc.type.materialtexten
dc.format.digitalOriginborn digitalen


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