Quantized phenomena of transport and magneto-optics in magnetic topological insulator heterostructures / Masataka Mogi.

Format:

Book

Author/Creator:

Mogi, Masataka, author.

Series:

Springer theses 2190-5061

Springer theses, 2190-5061

Language:

English

Subjects (All):

Topological insulators.

Magnetooptics.

Genre:

Electronic books.

Physical Description:

1 online resource (xv, 109 pages) : illustrations (some color).

Place of Publication:

Singapore : Springer, 2022.

Summary:

This book presents experimental studies on emergent transport and magneto-optical properties in three-dimensional topological insulators with two-dimensional Dirac fermions on their surfaces. Designing magnetic heterostructures utilizing a cutting-edge growth technique (molecular beam epitaxy) stabilizes and manifests new quantization phenomena, as confirmed by low-temperature electrical transport and time-domain terahertz magneto-optical measurements. Starting with a review of the theoretical background and recent experimental advances in topological insulators in terms of a novel magneto-electric coupling, the author subsequently explores their magnetic quantum properties and reveals topological phase transitions between quantum anomalous Hall insulator and trivial insulator phases; a new topological phase (the axion insulator); and a half-integer quantum Hall state associated with the quantum parity anomaly. Furthermore, the author shows how these quantum phases can be significantly stabilized via magnetic modulation doping and proximity coupling with a normal ferromagnetic insulator. These findings provide a basis for future technologies such as ultra-low energy consumption electronic devices and fault-tolerant topological quantum computers.

Contents:

Introduction

Experimental Methods

Magnetic Modulation Doping For Quantum Anomalous Hall Effect

Magnetic Proximity Induced Quantum Anomalous Hall Effect

Topological Phase Transitions Relevant to Quantum Anomalous Hall Effect

Half-integer Quantized Electrodynamics in 3D Topological Insulator

Summary.

Notes:

"Doctoral Thesis accepted by The University of Tokyo, Tokyo, Japan."

Includes bibliographical references.

Online resource; title from PDF title page (SpringerLink, viewed May 10, 2022).

ISBN:

9789811921377

9811921377

OCLC:

1315540403

Access Restriction:

Restricted for use by site license.