<div class="csl-bib-body">
<div class="csl-entry">Niyazi, A. (2022). <i>Collective modes in ordered phases of multi-orbital Hubbard model</i> [Dissertation, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2022.87705</div>
</div>
-
dc.identifier.uri
https://doi.org/10.34726/hss.2022.87705
-
dc.identifier.uri
http://hdl.handle.net/20.500.12708/19888
-
dc.description.abstract
Multi-orbital Hubbard model is well known for its rich phase diagram, is commonly used for simulation at real materials. Dynamical susceptibilityis related to spectrum of collective excitations in solids. In this thesis we present a dynamical mean-field (DMFT) study of dynamical susceptiblity in multi-orbital Hubbard model. By varying model parameters (band asymmetry,crystal field, temperature) we realize transition between various phases such as triplet excitonic condensate, spin state order (solid), supersolid or anti ferromagnets. We analyze the behavior of relevant dynamical susceptibilities across these transitions, which either breaks continuous or discrete symmetries. Besides revealing the rich physics of the studied model, our results show how DMFT susceptibilities can be used to identify approximate (weakly broken) symmetries and incipient instabilities.modes are found in response to such perturbations. The present work demonstrates the feasibility and utility of DMFT linear response calculations.
en
dc.language
English
-
dc.language.iso
en
-
dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
-
dc.subject
Dynamische Molekularfeldtheorie
de
dc.subject
Dynamische Suszeptibilität
de
dc.subject
Spontane Symmetriebrechung
de
dc.subject
dynamical mean-field theory
en
dc.subject
dynamical susceptibility
en
dc.subject
spontaneous symmetry breaking
en
dc.title
Collective modes in ordered phases of multi-orbital Hubbard model
en
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2022.87705
-
dc.contributor.affiliation
TU Wien, Österreich
-
dc.rights.holder
Abuduaini Niyazi
-
dc.publisher.place
Wien
-
tuw.version
vor
-
tuw.thesisinformation
Technische Universität Wien
-
tuw.publication.orgunit
E138 - Institut für Festkörperphysik
-
dc.type.qualificationlevel
Doctoral
-
dc.identifier.libraryid
AC16493157
-
dc.description.numberOfPages
99
-
dc.thesistype
Dissertation
de
dc.thesistype
Dissertation
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
-
item.languageiso639-1
en
-
item.openairetype
doctoral thesis
-
item.grantfulltext
open
-
item.fulltext
with Fulltext
-
item.cerifentitytype
Publications
-
item.mimetype
application/pdf
-
item.openairecristype
http://purl.org/coar/resource_type/c_db06
-
item.openaccessfulltext
Open Access
-
crisitem.author.dept
E138-02 - Forschungsbereich Correlations: Theory and Experiments
