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Extremely imbalanced two-dimensional electron-hole-photon systems
A. Tiene, J. Levinsen, M. M. Parish +3
We investigate the phases of two-dimensional electron-hole systems strongly coupled to a microcavity photon field in the limit of extreme charge imbalance. Using variational wave f…
WSe2/WS2 moiré superlattices: a new Hubbard model simulator
Yanhao Tang, Lizhong Li, Tingxin Li +8
The Hubbard model, first formulated by physicist John Hubbard in the 1960s, is a simple theoretical model of interacting quantum particles in a lattice. The model is thought to cap…
Resonant photovoltaic effect in doped magnetic semiconductors
Pankaj Bhalla, Allan H. MacDonald, Dimitrie Culcer
The rectified non-linear response of a clean undoped semiconductor to an AC electric field includes a well known intrinsic contribution -- the shift current. We show that when Kram…
Electronic structure of carbon nanotubes on graphene substrates
Benedetta Flebus, Allan H. MacDonald
Allotropes of carbon, including one-dimensional carbon nanotubes and two-dimensional graphene sheets, continue to draw attention as promising platforms for probing the physics of e…
Electronic Structure of Single-Twist Trilayer Graphene
Xiao Li, Fengcheng Wu, Allan H. MacDonald
Small-twist-angle bilayer graphene supports strongly correlated insulating states and superconductivity. Twisted few-layer graphene systems are likely to open up new directions for…
Correlated Insulating States in Twisted Double Bilayer Graphene
G. William Burg, Jihang Zhu, Takashi Taniguchi +3
We present a combined experimental and theoretical study of twisted double bilayer graphene with twist angles between 1° and 1.35°. Consistent with moiré band structure calculation…