3 papers
cond-mat.str-el2019
Fractional corner charges in spin-orbit coupled crystals
Frank Schindler, Marta Brzezińska, Wladimir A. Benalcazar +5
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 c…
cond-mat.mes-hall2018
Topology in the Sierpiński-Hofstadter problem
Marta Brzezińska, Ashley M. Cook, Titus Neupert
Using the Sierpiński carpet and gasket, we investigate whether fractal lattices embedded in two-dimensional space can support topological phases when subjected to a homogeneous ext…
cond-mat.str-el2017
Topological phase transitions in Chern insulators within three-band models
P. Potasz, B. Jaworowski, M. Kupczyński +3
We investigate topological phase transitions in Chern insulators within three-band models, focusing on the empty band and lowest band populated by spinless fermions. We consider Li…