332 citations · 1.9k across the 34 of their papers we have counts for
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Topological chiral superconductivity with spontaneous vortices and supercurrent in twisted bilayer graphene
Fengcheng Wu
We study -wave superconductivity in twisted bilayer graphene and reveal phenomena that arise due to the moiré superlattice. In the -wave pairing, the relative motion (RM) of…
Phonon-induced giant linear-in- resistivity in magic angle twisted bilayer graphene: Ordinary strangeness and exotic superconductivity
Fengcheng Wu, Euyheon Hwang, Sankar Das Sarma
We study the effect of electron-acoustic phonon interactions in twisted bilayer graphene on resistivity in the high-temperature transport and superconductivity in the low-temperatu…
Moiré Excitons in Van der Waals Heterostructures
Kha Tran, Galan Moody, Fengcheng Wu +19
In van der Waals (vdW) heterostructures formed by stacking two monolayer semiconductors, lattice mismatch or rotational misalignment introduces an in-plane moiré superlattice. Whil…
Topological insulators in twisted transition metal dichalcogenide homobilayers
Fengcheng Wu, Timothy Lovorn, Emanuel Tutuc +2
We show that moiré bands of twisted homobilayers can be topologically nontrivial, and illustrate the tendency by studying valence band states in valleys of twisted bilayer…
Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference
Mallika T. Randeria, Benjamin E. Feldman, Fengcheng Wu +6
Novel broken symmetry states can spontaneously form due to Coulomb interactions in electronic systems with multiple internal degrees of freedom. Multi-valley materials offer an esp…
Theory of phonon-mediated superconductivity in twisted bilayer graphene
Fengcheng Wu, A. H. MacDonald, Ivar Martin
We present a theory of phonon-mediated superconductivity in near magic angle twisted bilayer graphene. Using a microscopic model for phonon coupling to moiré band electrons, we fin…