37 citations · 87 across the 11 of their papers we have counts for
11 papers
Layer-Number-Controlled Symmetry Breaking and Surface-State Transport in Rhombohedral Graphene Multilayers
Bosai Lyu, Jian Zheng, Kai Liu +12
Rhombohedral multilayer graphene hosts layer-polarized flat bands, providing an intriguing platform for correlated and topological electronic states; however, the role of layer num…
Commensuration torques in double-moiré twisted trilayer hexagonal boron nitride and graphene heterostructures
Youngju Park, Nicolas Leconte, Prathap Kumar Jharapla +3
We study commensuration-driven torques and angle locking in double-moiré trilayer hexagonal boron nitride (hBN) and graphene heterostructures using large-scale atomistic relaxation…
Direct view of gate-tunable miniband dispersion in graphene superlattices near the magic twist angle
Zhihao Jiang, Dongkyu Lee, Alfred J. H. Jones +12
Superlattices from twisted graphene mono- and bi-layer systems give rise to on-demand many-body states such as Mott insulators and unconventional superconductors. These phenomena a…
Observation of dichotomic field-tunable electronic structure in twisted monolayer-bilayer graphene
Hongyun Zhang, Qian Li, Youngju Park +18
Twisted bilayer graphene (tBLG) provides a fascinating platform for engineering flat bands and inducing correlated phenomena. By designing the stacking architecture of graphene lay…
Reversible optical data storage below the diffraction limit
Richard Monge, Tom Delord, Carlos A. Meriles
Color centers in wide-bandgap semiconductors feature metastable charge states that can be interconverted with the help of optical excitation at select wavelengths. The distinct flu…
Interaction-driven spontaneous broken-symmetry insulator and metals in ABCA tetralayer graphene
Kai Liu, Jian Zheng, Yating Sha +11
Interactions among charge carriers in graphene can lead to the spontaneous breaking of multiple degeneracies. When increasing the number of graphene layers following rhombohedral s…
Topological flat bands in rhombohedral tetralayer and multilayer graphene on hexagonal boron nitride moire superlattices
Youngju Park, Yeonju Kim, Bheema Lingam Chittari +1
We show that rhombohedral four-layer graphene (4LG) nearly aligned with a hexagonal boron nitride (hBN) substrate often develops nearly flat isolated low energy bands with non-zero…
Chirality and correlations in the spontaneous spin-valley polarization of rhombohedral multilayer graphene
Yunsu Jang, Youngju Park, Jeil Jung +1
We investigate the total energies of spontaneous spin-valley polarized states in bi-, tri-, and tetralayer rhombohedral graphene where the long-range Coulomb correlations are accou…
Commensuration torques and lubricity in double moire systems
Nicolas Leconte, Youngju Park, Jiaqi An +1
We study the commensuration torques and layer sliding energetics of alternating twist trilayer graphene (t3G) and twisted bilayer graphene on hexagonal boron nitride (t2G/BN) that…
Spin-orbit coupling-enhanced valley ordering of malleable bands in twisted bilayer graphene on WSe2
Saisab Bhowmik, Bhaskar Ghawri, Youngju Park +8
New phases of matter can be stabilized by a combination of diverging electronic density of states, strong interactions, and spin-orbit coupling. Recent experiments in magic-angle t…
Electronic structure of lattice relaxed alternating twist tNG-multilayer graphene: from few layers to bulk AT-graphite
Nicolas Leconte, Youngju Park, Jiaqi An +2
We calculate the electronic structure of AA'AA'...-stacked alternating twist N-layer (tNG) graphene for N = 3, 4, 5, 6, 8, 10, 20 layers and bulk alternating twist (AT) graphite sy…