Designing Topological Phase of Bismuth Halides and Controlling Rashba Effect in Films Studied by ARPES

This book discusses the observation and control of spin-polarized electrons in Rashba thin films and topological insulators, including the first observations of a weak topological insulator and a higher-order topological insulator in bismuth halides. It uses angle-resolved photoemission spectroscopy (ARPES) to study these effects and demonstrates a scaling law for the Rashba effect in quantum well films. It also provides the first experimental demonstration of both a WTI and HOTI state in bismuth iodide and bismuth bromide.

Format: Hardback
Length: 126 pages
Publication date: 26 April 2022
Publisher: Springer Verlag, Singapore

This comprehensive book delves into the fascinating realm of spin-polarized electrons in Rashba thin films and topological insulators. It begins with a comprehensive review of electronic structures at the solid surface, highlighting the polarization of electrons due to the Rashba effect or topological insulator states with robust spin-orbit coupling. The book then explores the experimental techniques employed to study these effects, including angle-resolved photoemission spectroscopy (ARPES).

The book focuses on two distinct systems: noble metal thin films with Rashba effects and bismuth halides topological insulators. In the first system, the study delves into the role of wavefunctions in spin-splitting and presents the first observation of a scaling law for the Rashba effect in quantum well films. High-resolution spin-resolved ARPES plays a pivotal role in systematically tracing the thickness-evolution of the effect.

In the second system, the book showcases the experimental demonstration of both a weak topological insulator (WTI) and a higher-order topological insulator (HOTI) in bismuth halides. Notably, nano-ARPES with high spatial resolution is utilized to confirm the topological surface states on the side surface of the crystal, a hallmark of WTIs.

The book's detailed description of the basic and recently developed ARPES technique with spin-resolution or spatial-resolution, essential in investigating spin-polarized electrons at a crystal surface, makes it a valuable resource for researchers in surface physics, topological materials, spintronics, and other condensed matter fields.

Weight: 389g
Dimension: 235 x 155 (mm)
ISBN-13: 9789811918735
Edition number: 1st ed. 2022