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Real-Space Properties of Topological and Correlated Materials

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thesis
posted on 01.08.2020, 00:00 by Sagen Cocklin
Topological superconductors have been theorized to exhibit novel electronic states known as Majorana states. These states have interesting non-Abelian braiding statistics, which, along with their protection by the topological phase, make them prime candidate states for robust quantum computing. Due to the bulk-boundary correspondence in topological materials, these states are exhibited at the boundaries of materials making real-space probes, such as scanning tunneling spectroscopy (STS) necessary for their characterization. In this dissertation, I discuss the emergence of topological superconductivity in Fe/Re(0001)-O(2X1) as evidenced by STS measurements and compare with theory. I discuss tuning the dimension of generic topological superconductors, which may open the door to furthering the capabilities of engineering Majorana states. I describe a new model of topological superconductivity in FeSe0.45Te0.55. Finally, I examine the real-space probe shot-noise scanning tunneling spectroscopy using the Kondo effect as a testbed.

History

Advisor

Morr, Dirk K

Chair

Morr, Dirk K

Department

Physics

Degree Grantor

University of Illinois at Chicago

Degree Level

Doctoral

Degree name

PhD, Doctor of Philosophy

Committee Member

Klie, Robert Imbo, Tom Ogut, Serdar Rachel, Stephan

Submitted date

August 2020

Thesis type

application/pdf

Language

en