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7 papers · 2 filters
Mechanisms of enhanced orbital dia- and paramagnetism: Application to the Rashba semiconductor BiTeI
G. A. H. Schober, H. Murakawa, M. S. Bahramy +4
We study the magnetic susceptibility of a layered semiconductor BiTeI with giant Rashba spin splitting both theoretically and experimentally to explore its orbital magnetism. Apart…
Emergent electromagnetism in solids
Naoto Nagaosa, Yoshinori Tokura
Electromagnetic field (EMF) is the most fundamental field in condensed-matter physics. Interaction between electrons, electron-ion interaction, and ion-ion interaction are all of t…
Emergence of non-centrosymmetric topological insulating phase in BiTeI under pressure
M. S. Bahramy, B. -J. Yang, R. Arita +1
The spin-orbit interaction affects the electronic structure of solids in various ways. Topological insulators are one example where the spin-orbit interaction leads the bulk bands…
Common Origin of the Circular-dichroism Pattern in ARPES of SrTiO3 and CuxBi2Se3
Y. Ishida, H. Kanto, A. Kikkawa +15
Circular dichroism in the angular distribution (CDAD) of photoelectrons from SrTiO3:Nb and CuxBi2Se3 is investigated by 7-eV laser ARPES. In addition to the well-known node that oc…
Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures
Di Xiao, Wenguang Zhu, Ying Ran +2
Topological insulators are characterized by a nontrivial band topology driven by the spin-orbit coupling. To fully explore the fundamental science and application of topological in…
Origin of giant bulk Rashba splitting: Application to BiTeI
M. S. Bahramy, R. Arita, N. Nagaosa
We theoretically propose the necessary conditions for realization of giant Rashba splitting in bulk systems. In addition to (i) the large atomic spin-orbit interaction in an invers…