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dc.rights.licenseCC-BY-NC-ND
dc.contributor.advisorFritz, L.
dc.contributor.authorMinarelli, E.
dc.date.accessioned2018-02-19T18:01:10Z
dc.date.available2018-02-19T18:01:10Z
dc.date.issued2018
dc.identifier.urihttps://studenttheses.uu.nl/handle/20.500.12932/28636
dc.description.abstractRecently, there have been studies on p-wave superconductor system designed with a lattice of impurity over its surface. They result in non-trivial topological phases with high-values of Chern Numbers. The present thesis investigates a similar model starting with a 3D strong Topological Insulator - experimentally established. Focusing on one surface, first we place a ferromagnetic material to create an energy gap on the surface spectrum, then we display a square rarefied lattice of magnetic impurities. That is a two-bands model and we derive for it an effective Hamiltonian. Calculating the Chern Numbers of the in-gap bands structure and studying the surface energy spectrum, we find the setting responds like a Chern Insulator. Finally, comparing the spectrum energy initial condition of our model to the p-wave superconductor one, we mention the next improvements to eventually reach high-values of Chern Numbers.
dc.description.sponsorshipUtrecht University
dc.format.extent2730628
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.titleEngineering of impurity bands with Chern Numbers
dc.type.contentMaster Thesis
dc.rights.accessrightsOpen Access
dc.subject.keywordsChern Numbers, 3D strong Topological Insulator, impurity bands, impurity lattice
dc.subject.courseuuTheoretical Physics


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