3 papers
cond-mat.str-el2023
Complete crystalline topological invariants from partial rotations in (2+1)D invertible fermionic states and Hofstadter's butterfly
Yuxuan Zhang, Naren Manjunath, Ryohei Kobayashi +1
The theory of topological phases of matter predicts invariants protected only by crystalline symmetry, yet it has been unclear how to extract these from microscopic calculations in…
cond-mat.str-el2020
Electrical switching of magnetic order in an orbital Chern insulator
Hryhoriy Polshyn, Jihang Zhu, Manish A. Kumar +8
Magnetism typically arises from the joint effect of Fermi statistics and repulsive Coulomb interactions, which favors ground states with non-zero electron spin. As a result, contro…
cond-mat.mes-hall2018
Tuning superconductivity in twisted bilayer graphene
Matthew Yankowitz, Shaowen Chen, Hryhoriy Polshyn +5
Materials with flat electronic bands often exhibit exotic quantum phenomena owing to strong correlations. Remarkably, an isolated low-energy flat band can be induced in bilayer gra…