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Engineering electrically-switchable quantum anomalous Hall states by spin-orbit coupling
Maosen Qin, Ziwei Wang, Gyeongmin Kim +5
Nonvolatile gate-driven switching of quantum anomalous Hall (QAH) states in graphene moiré systems provides a promising route toward topological electronics based on chiral edge st…
Imaging orbital ferromagnetism in a moiré Chern insulator
C. L. Tschirhart, M. Serlin, H. Polshyn +8
Electrons in moiré flat band systems can spontaneously break time reversal symmetry, giving rise to a quantized anomalous Hall effect. Here we use a superconducting quantum interfe…
Manipulating multi-vortex states in superconducting structures
Hryhoriy Polshyn, Tyler Naibert, Raffi Budakian
We demonstrate a method for manipulating small ensembles of vortices in multiply-connected superconducting structures. A micron-size magnetic particle attached to the tip of a sili…
Skyrmion solids in monolayer graphene
Haoxin Zhou, Hryhoriy Polshyn, Takashi Taniguchi +2
Partially filled Landau levels host competing orders, with electron solids prevailing close to integer fillings before giving way to fractional quantum Hall liquids as the Landau l…
Tuning superconductivity in twisted bilayer graphene
Matthew Yankowitz, Shaowen Chen, Hryhoriy Polshyn +5
Materials with flat electronic bands often exhibit exotic quantum phenomena owing to strong correlations. Remarkably, an isolated low-energy flat band can be induced in bilayer gra…