Quantized Phenomena of Transport and Magneto-Optics in Magnetic Topological Insulator Heterostructures / Springer Theses (PDF)
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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.
- Autor: Masataka Mogi
- 2022, 1st ed. 2022, 109 Seiten, Englisch
- Verlag: Springer Nature Singapore
- ISBN-10: 9811921377
- ISBN-13: 9789811921377
- Erscheinungsdatum: 07.05.2022
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- Grösse: 4.43 MB
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