Fractional corner charges in spin-orbit coupled crystals

We study two-dimensional spinful insulating phases of matter that are protected by time-reversal and crystalline symmetries. To characterize these phases, we employ the concept of corner charge fractionalization: corners can carry charges that are fractions of even multiples of the electric charge....

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Bibliographic Details
Main Authors: Frank Schindler, Marta Brzezińska, Wladimir A. Benalcazar, Mikel Iraola, Adrien Bouhon, Stepan S. Tsirkin, Maia G. Vergniory, Titus Neupert
Format: Article
Language:English
Published: American Physical Society 2019-11-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.1.033074