689 citations · 1.3k across the 16 of their papers we have counts for
17 papers
Visualizing orbital magnetism in electron doped rhombohedral multilayer graphene
Owen I. Sheekey, Trevor B. Arp, Benjamin A. Foutty +24
Electron doped rhombohedral multilayer graphene at high displacement field features an exceptionally flat band minimum with near-ideal quantum geometry. Experiments in this regime…
Cryogenic shock exfoliation for ultrahigh mobility rhombohedral graphite nanoelectronics
Ludwig Holleis, Youngjoon Choi, Canxun Zhang +16
Rhombohedral multilayer graphene (RMG) offers a highly tunable platform for correlated electron physics, featuring field-effect control of magnetic, superconducting, and topologica…
Imaging flat band electron hydrodynamics in biased bilayer graphene
Canxun Zhang, Evgeny Redekop, Hari Stoyanov +12
Hydrodynamic electron transport arises when carrier kinetics are dominated by interelectron collisions rather than the relaxation of momentum out of the electron system. In recent…
Propagating Collective Spin-valley Modes in Twisted WSe2
Richen Xiong, Yi Guo, Chenxin Qin +15
The emergence of neutral collective modes is a hallmark of correlated quantum phases but is often challenging to probe experimentally. In two-dimensional flatband systems, charge r…
Resolving Intervalley Gaps and Many-Body Resonances in Moiré Superconductor
Hyunjin Kim, Gautam Rai, Lorenzo Crippa +15
Magic-angle twisted multilayer graphene stands out as a highly tunable class of moiré materials that exhibit strong electronic correlations and robust superconductivity. However, u…
Visualizing incommensurate inter-valley coherent states in rhombohedral trilayer graphene
Yiwen Liu, Ambikesh Gupta, Youngjoon Choi +13
ABC-stacked rhombohedral graphene multilayers exhibit a wide variety of electronic ground states characterized by broken isospin symmetry and superconductivity. Recently, indirect…
Superconductivity and spin canting in spin-orbit proximitized rhombohedral trilayer graphene
Caitlin L. Patterson, Owen I. Sheekey, Trevor B. Arp +15
Graphene and transition metal dichalcogenide flat-band systems show similar phase diagrams, replete with magnetic and superconducting phases. An abiding question has been whether m…
Superconductivity and quantized anomalous Hall in rhombohedral graphene
Youngjoon Choi, Ysun Choi, Marco Valentini +8
Inducing superconducting correlations in chiral edge states is predicted to generate topologically protected zero energy modes with exotic quantum statistics. Experimental efforts…
Imaging inter-valley coherent order in magic-angle twisted trilayer graphene
Hyunjin Kim, Youngjoon Choi, Étienne Lantagne-Hurtubise +12
Magic-angle twisted trilayer graphene (MATTG) exhibits a range of strongly correlated electronic phases that spontaneously break its underlying symmetries. The microscopic nature o…
Hierarchy of Symmetry Breaking Correlated Phases in Twisted Bilayer Graphene
Robert Polski, Yiran Zhang, Yang Peng +8
Twisted bilayer graphene (TBG) near the magic twist angle of exhibits a rich phase diagram. However, the interplay between different phases and their dependence on tw…
Unsupervised learning of two-component nematicity from STM data on magic angle bilayer graphene
William Taranto, Samuel Lederer, Youngjoon Choi +4
Moiré materials such as magic angle twisted bilayer graphene (MATBG) exhibit remarkable phenomenology, but present significant challenges for certain experimental methods, particul…
Ascendance of Superconductivity in Magic-Angle Graphene Multilayers
Yiran Zhang, Robert Polski, Cyprian Lewandowski +10
Graphene moire superlattices have emerged as a platform hosting and abundance of correlated insulating, topological, and superconducting phases. While the origins of strong correla…
Spectroscopic Signatures of Strong Correlations and Unconventional Superconductivity in Twisted Trilayer Graphene
Hyunjin Kim, Youngjoon Choi, Cyprian Lewandowski +7
Magic-angle twisted trilayer graphene (MATTG) has emerged as a novel moiré material that exhibits both strong electronic correlations and unconventional superconductivity. However,…
Interaction-driven Band Flattening and Correlated Phases in Twisted Bilayer Graphene
Youngjoon Choi, Hyunjin Kim, Cyprian Lewandowski +8
Flat electronic bands, characteristic of magic-angle twisted bilayer graphene (TBG), host a wealth of correlated phenomena. Early theoretical considerations suggested that, at the…
Tracing out Correlated Chern Insulators in Magic Angle Twisted Bilayer Graphene
Youngjoon Choi, Hyunjin Kim, Yang Peng +9
Magic-angle twisted bilayer graphene (MATBG) exhibits a range of correlated phenomena that originate from strong electron-electron interactions. These interactions make the Fermi s…
Superconductivity without insulating states in twisted bilayer graphene stabilized by monolayer WSe
Harpreet Singh Arora, Robert Polski, Yiran Zhang +11
Magic-angle twisted bilayer graphene (TBG), with rotational misalignment close to 1.1, features isolated flat electronic bands that host a rich phase diagram of correlated…
Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle
Youngjoon Choi, Jeannette Kemmer, Yang Peng +11
Twisted bilayer graphene with a twist angle of around 1.1° features a pair of isolated flat electronic bands and forms a strongly correlated electronic platform. Here, we use scann…