3 papers
cond-mat.str-el2026
Quantum spin Hall crystals at fractional filling of twisted MoTe
Xiaoyang Shen, Raul Perea-Causin, Christopher Ekman +3
We predict and classify interaction-driven quantum spin Hall crystals (QSHCs), a class of states emerging at fractional filling through an interplay of topology and spontaneous tra…
cond-mat.str-el2026
Symmetry-Fractionalized Skin Effects in Non-Hermitian Luttinger Liquids
Christopher Ekman, Emil J. Bergholtz, Paolo Molignini
In one dimension, strongly correlated gapless systems are highly constrained due to conformal invariance, leading to the decoupling of low energy degrees of freedom corresponding t…
cond-mat.mes-hall2026
Hall conductance in a weakly time-reversal invariant open system
Alexander Fagerlund, Christopher Ekman, Rodrigo Arouca
The quantum Hall effect and the quantum anomalous Hall effect both require time-reversal invariance to be broken. We show that non-equilibrium effects can cause Hall physics to ari…