Topological Quantum Materials Concepts, Models, and Phenomena

In topological quantum materials, quantum effects emerge at macroscopic scales and are robust to continuous changes in a material’s state. This striking synergy between quantum and topological properties is of great interest for both fundamental research and emerging technologies, especially in the fields of electronics and quantum information. This edition of the book presents a wealth of topological quantum materials, bringing together burgeoning research from different areas: topological insulators, transition metal dichalcogenides, Weyl semimetals, and unconventional and topological superconductors. The realization of the application potential of topological quantum materials requires understanding their properties at a fundamental level. This brings us back to the discovery of topological phases of matter, which earned the Nobel Prize in Physics in 2016. This book explores the connection between pioneering work on topological phases of matter and a flurry of activity that followed. The topics covered include the quantum anomalous and spin Hall effects, emergent axion electrodynamics and topological magnetoelectric effects, Weyl nodes and surface Fermi arcs, weak antilocalization, induced triplet superconductivity, Majorana fermion modes, and the fractional Josephson effect.

1. Introducing Topological Materials: Mind the Time Reversal 2. Two-Dimensional Topological Insulators 3. Two-Dimensional Topological Insulators with Broken Time-Reversal Symmetry 4. Three-Dimensional Topological Insulators andWeyl Semimetals 5. Surface Electron Transport and Magneto-Optics 6. Unconventional Designer Superconductors 7. Topological Superconductors and Majorana Modes

Grigory Tkachov is a professor of theoretical physics at Augsburg University, Germany. He did his PhD at the Lifshitz Theoretical Physics Department of Kharkiv National University, Ukraine, and completed a habilitation in theoretical physics at Wuerzburg University, Germany. He has more than two decades of research experience at European academic institutions, including Lancaster University, Regensburg University, and the Max Planck Institute for the Physics of Complex Systems. Dr. Tkachov’s research interests include topological phases of matter, non-equilibrium quantum many-body theory, superconductivity, and electromagnetism of solids.