Chiral edge states in 2d topological insulators and helical surface states in 3d topological insulators show a robust transport against nonmagnetic impurities. Such a nontrivial character inspired physicists to come up with applications such as spintronic devices, thermoelectric materials, photovoltaics, and quantum computation.
In this thesis we present the theory of topological insulators. Specifically, we describe the mathematical formulation of the topological order of insulating band structures, which leads to the theoretical discovery of three-dimensional topological insulator phases.
Saghir, Mohammad (2016) Topological insulators: a study of bulk crystalline and nanomaterials. PhD thesis, University of Warwick.
Topological insulators may provide new route to generating novel phases and quasi-particles, and may find applications in spintronics and quantum computing.In 2009, a new family of topological insulators, including Bi 2 Se 3, Bi 2 Te 3 and Sb 2 Te 3, was identified theoretically and experimentally. However, the most intriguing property of time-reversal-symmetry that protects topological.
In this thesis, we study the properties of topological materials using theoretical tech- niques such as rst-principles calculations and tight-binding models. In the rst part of the thesis, we deal with the phase transitions in 3D topological insulators.
Yang He, PhD, Harvard University (November 2015) PDF (8) Nanopatterning and Transport Properties of Cuprate Superconductors. Nicholas Litombe, PhD, Harvard University (May 2015) PDF (7) Scanning Tunneling Spectroscopy of Topological Insulators and Cuprate Superconductors. Michael Yee, PhD, Harvard University (May 2014) PDF.
PhD Project: From free fermions to parafermions: how to build a universal topological quantum computer from free particles. Supervisors: Dr. Jiannis Pachos Dr. Zlatko Papic. Topology plays a prominent role in describing quantum phenomena such as the quantum Hall effect and topological insulators.
Terahertz and Infrared study of topological insulators PhD Candidate: Marta Autore PhD Supervisor: Prof. Stefano Lupi April 7, 2014 1 Introduction Topological Insulators (TIs) are a new exotic class of materials, which is one of the most studied and intriguing issue at the focus in condensed matter physics today.
This thesis is focused on the study of carrier transport behaviour in magnetically doped topological insulator (TI) materials.
Master Thesis topics: Exploration of topological robustness: Ag and Mn point and line defects at the surface and edge states of Bi 2 Se 3 and Bi 2 Te 3. it is expected to have a solid background in solid state physics, and to have motivation to dive into computational physics.
Graduate Theses and Dissertations Iowa State University Capstones, Theses and Dissertations 2013 Topological insulator growth and characterization Nicholas Ross Meyer. Topological insulators are a new class of materials that have recently received a lot of at-.
Topological insulators (TIs) are a novel class of material which host helical surface states with exciting and unique electronic properties. They can provide insights into new physics and also pave the way for potential spintronic applications.
Oneofthesesystems is the so-called topological insulator (TI), and in these there have been observations of states that possess extraordinary properties. They can, for example, accomodate statesthatcanonlyliveonthesurfaceofthematerial,whichshowimmunitytodis- order,andhavespinlockedperpendiculartothemomentum.
Angle-resolve photoemission spectroscopy (ARPES) as an experimental method that can directly measure electronic structure has been playing an important role in studies of novel materials, such as high temperature superconductors, topological insulators and many others. In this thesis, we will discuss the development of a tunable vacuum UV Laser ARPES system as well as ARPES studies of.
This thesis contains work in three areas. The works are presented chronologically starting with my work on the decomposition and measurement of Chern numbers in four component topological insulators and superconductors. This is followed by the work done in the discovery and analysis of four new models of topological superconductivity in three spatial dimensions.The so-called topological insulators are those materials that are insulators in bulk, i.e. do not allow electric currents in its volume, but are conductors on its surface. Unlike the usual conductors, that is, metals, the electric current circulating in a topological insulator does not suffer any loss of energy.PhD. Contact. About. Network. Publications 36. Projects 3. About. 36. Publications. 1,778. Reads. . One such example is the chiral edge states in anomalous Floquet topological insulators, whose.