4 papers
Superfluid stiffness bounds in time-reversal symmetric superconductors
Yongxin Zeng, Andrew J. Millis
Quantum geometry has been shown to make an important contribution to the superfluid stiffness of superconductors, especially for flat-band systems such as moiré materials. In this…
Berry Phase Dynamics of Sliding Electron Crystals
Yongxin Zeng, Andrew J. Millis
Systems such as Wigner crystals and incommensurate charge density waves that spontaneously break a continuous translation symmetry have unusual transport properties arising from th…
Sublattice structure and topology in spontaneously crystallized electronic states
Yongxin Zeng, Daniele Guerci, Valentin Crépel +2
The prediction and realization of the quantum anomalous Hall effect are often intimately connected to honeycomb lattices in which the sublattice degree of freedom plays a central r…
Keldysh field theory of dynamical exciton condensation transitions in nonequilibrium electron-hole bilayers
Yongxin Zeng, Valentin Crépel, Andrew J. Millis
Recent experiments have realized steady-state electrical injection of interlayer excitons in electron-hole bilayers subject to a large bias voltage. In the ideal case in which inte…