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Electrically-tunable ultra-flat bands and -electron magnetism in graphene nanoribbons
Ruize Ma, Nikita V. Tepliakov, Arash A. Mostofi +1
Atomically thin crystals hosting flat electronic bands have been recently identified as a rich playground for exploring and engineering strongly correlated phases. Yet, their varie…
One-dimensional magnetic conduction channels across zigzag graphene nanoribbon/hexagonal boron nitride heterojunctions
Michele Pizzochero, Nikita V. Tepliakov, Johannes Lischner +2
We examine the electronic structure of recently fabricated in-plane heterojunctions of zigzag graphene nanoribbons embedded in hexagonal boron nitride. We focus on hitherto unexplo…
Short vs. long range exchange interactions in twisted bilayer graphene
Alejandro Jimeno-Pozo, Zachary A. H. Goodwin, Pierre A. Pantaleón +6
We discuss the effect of long-range interactions within the self-consistent Hartree-Fock (HF) approximation in comparison to short-range atomic Hubbard interactions on the band str…
Unveiling and Manipulating Hidden Symmetries in Graphene Nanoribbons
Nikita V. Tepliakov, Johannes Lischner, Efthimios Kaxiras +2
Armchair graphene nanoribbons are a highly promising class of semiconductors for all-carbon nanocircuitry. Here, we present a new perspective on their electronic structure from sim…
Flat bands, electron interactions and magnetic order in magic-angle mono-trilayer graphene
Zachary A. H. Goodwin, Lennart Klebl, Valerio Vitale +6
Starting with twisted bilayer graphene, graphene-based moiré materials have recently been established as a new platform for studying strong electron correlations. In this paper, we…
Hartree theory calculations of quasiparticle properties in twisted bilayer graphene
Zachary A. H. Goodwin, Valerio Vitale, Xia Liang +2
A detailed understanding of interacting electrons in twisted bilayer graphene (tBLG) near the magic angle is required to gain insights into the physical origin of the observed brok…