Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Topological Crystalline"”.
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Topological materials and quantum entanglement
… of two main topics: materials which realize topological phases of matter and applications of the concept of entanglement in understanding topological phases and their transitions. The first part will focus on a particular class of materials called topological crystalline insulators (TCI), …
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Patterns of electro-magnetic response in topological semi-metals
Topological semimetals are gapless states of matter which have robust and unique electromagnetic responses and surface states. In this thesis, we consider semimetals which have point like Fermi surfaces in various spatial dimensions $D=1,2,3$ which naturally occur in the transition between $n$th …
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Scanning tunneling microscopy and spectroscopy study of phase transitions and topology in layered transition metal dichalcogenides
… chiral anomaly, giant magnetoresistance, and topologically protected surface states known as Fermi arcs. To explore potential application for Weyl semimetals requires understanding their electronic properties. Here a detailed analysis of our Quasi-Particle Interference (QPI) study of MoTe$_2$ …
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Electric multipole moments and higher-order topological phases in crystalline insulators and superconductors
… extensions of the theory of polarization in crystalline insulators. The notion that electronic wave functions of energy bands in crystalline insulators have Berry phases associated with the positions of electronic charge is at the basis of our understanding of topological band theory. We …
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Topological phases in narrow-band systems
I discuss several novel topological phases in correlated electron systems, realized through spin-orbit interactions and lattice effects especially narrow-band systems. The first realizes the fractional quantum Hall effect using geometric frustration and ferromagnetism to obtain a nearly flat band …
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Quantum Transport in Topological Phases of Matter
Topological phases of matter attract constant attention in the condensed matter physics community, both due to the fundamental yet simple principles that govern them, and a multitude of experimental observations with the potential for technological applications. Among the ways of studying such …
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Crystalline topological phases: Bulk-boundary correspondence, geometric response, entanglement, and non-Hermitian skin effect
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Topological Phases in Perovskite Iridates with Strong Spin-Orbit Coupling
The study of topological phases of matter has attracted much attention recently, providing a promising route to understanding the classification of various phases in condensed matter physics. The Iridates, which are Iridium-based compounds, have already shown rich physical phenomena and can be a …
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Interdimensional effects in systems of fermions
… field of spintronics. These materials include topological insulators, graphene, and heterostructure materials with large Rashba spin-orbit coupling along an interface. In all of these materials, the electron's spin is responsible for exotic behaviour along either a surface or an interface. …
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Rotational Symmetry and Phase Dynamics in Topological Superconductors
Topological superconductors are phases of matter that cannot be adiabatically connected to a trivial superconductor without closing the bulk gap or breaking some fundamental symmetry. Intimately tied to topological superconductors are Majorana bound states. These are neutral zero-energy …
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The classification of topological insulators and superconductors for non-spatial and spatial symmetries
We study a topological classification of insulators and superconductors in the presence of non-spatial discrete symmetries in the Altland-Zirnbauer classification and spatial symmetries in any spatial dimension. We provide a unified method, the construction of bulk Dirac Hamiltonians in minimal …
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Probing bulk crystalline topology with broken translational symmetry: Position-space markers & other techniques
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Laser-coupled scanning tunneling microscopy and spectroscopy of quantum materials and qubit defects
… this chapter I describe our measurements on the topological crystalline insulator Pb0.7Sn0.3Se in which we show the existence of an enhanced transient current up to 1.2 ps at the topological step edges of the material, with the maximum edge-to-terrace contrast at the Dirac point close to EFermi − …
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Position-space and spin signatures of higher-order topological insulators
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Topological Insulating States in Photonics and Acoustics
<p>Recent surge of interest in topological insulators, insulating in their interior but conducting at the surfaces or interfaces of different domains, has led to the discovery of a variety of new topological states, and their topological invariants are characterized by numerous approaches in the …