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dc.rights.licenseCC-BY-NC-ND
dc.contributor.advisorStoof, H.T.C.
dc.contributor.authorWang, Zhiwei
dc.date.accessioned2021-11-01T00:00:21Z
dc.date.available2021-11-01T00:00:21Z
dc.date.issued2021
dc.identifier.urihttps://studenttheses.uu.nl/handle/20.500.12932/183
dc.description.abstractThis thesis investigates the properties of 1D Wannier excitons in a 1D s-p wave hybrid chain. Based on the tight-binding model, we first calculate the winding number of the single-electron band structure. Then, we introduce the particle-hole basis with the interband Coulomb interaction in 1D to determine the bound-state spectrum and the dispersion relation of excitons. Finally, we calculate the winding number for the exciton states themselves and show that it is exactly twice as large as the single-electron winding number in the same 1D chain.
dc.description.sponsorshipUtrecht University
dc.language.isoEN
dc.subjectThe exciton system provides us with a new platform to study topological insulators. We calculated the dispersion relation and the winding number for excitons living in a 1D chain model.
dc.titleWannier exciton states in a 1D topological chain
dc.type.contentMaster Thesis
dc.rights.accessrightsOpen Access
dc.subject.keywordsTopological excitons; winding number; 1D chain; Topological insulators
dc.subject.courseuuTheoretical Physics
dc.thesis.id456


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