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Books > Science & Mathematics > Physics > Quantum physics (quantum mechanics)
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Designing Topological Phase of Bismuth Halides and Controlling Rashba Effect in Films Studied by ARPES (Hardcover, 1st ed. 2022)
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Designing Topological Phase of Bismuth Halides and Controlling Rashba Effect in Films Studied by ARPES (Hardcover, 1st ed. 2022)
Series: Springer Theses
Expected to ship within 12 - 19 working days
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This book presents the observation and the control of
spin-polarized electrons in Rashba thin films and topological
insulators, including the first observations of a weak topological
insulator (WTI) and a higher-order topological insulator (HOTI) in
bismuth halides. It begins with a general review of electronic
structures at the solid surface and mentions that an electron spin
at a surface is polarized due to the Rashba effect or topological
insulator states with strong spin-orbit coupling. Subsequently it
describes the experimental techniques used to study these effects,
that is, angle-resolved photoemission spectroscopy (ARPES). Further
it moves its focus onto the experimental investigations, in which
mainly two different systems-noble metal thin films with the Rashba
effects and bismuth halides topological insulators-are used. The
study of the first system discusses the role of wavefunctions in
spin-splitting and demonstrates a scaling law for the Rashba effect
in quantum well films for the first time. High-resolution
spin-resolved ARPES plays a vital role in systematically trace the
thickness-evolution of the effect. The study of the latter material
is the first experimental demonstration of both a WTI and HOTI
state in bismuth iodide and bismuth bromide, respectively.
Importantly, nano-ARPES with high spatial resolution is used to
confirm the topological surface states on the side surface of the
crystal, which is the hallmark of WTIs. The 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 the book a valuable source
for researchers not only in surface physics or topological
materials but also in spintronics and other condensed-matter
physics.
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