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cond-mat.mes-hall2018
Higher angular momentum band inversions in two dimensions
Jörn W. F. Venderbos, Yichen Hu, C. L. Kane
We study a special class of topological phase transitions in two dimensions described by the inversion of bands with relative angular momentum higher than 1. A band inversion of th…
cond-mat.soft2018
Aspects of Defect Topology in Smectic Liquid Crystals
Thomas Machon, Hillel Aharoni, Yichen Hu +1
We study the topology of smectic defects in two and three dimensions. We give a topological classification of smectic point defects and disclination lines in three dimensions. In a…
cond-mat.str-el2018
Fractional Excitonic Insulator
Yichen Hu, Jörn W. F. Venderbos, C. L. Kane
We argue that a correlated fluid of electrons and holes can exhibit a fractional quantum Hall effect at zero magnetic field analogous to the Laughlin state at filling . We int…