Search Results for author: Hoi Chun Po

Found 6 papers, 3 papers with code

Topogivity: A Machine-Learned Chemical Rule for Discovering Topological Materials

1 code implementation10 Feb 2022 Andrew Ma, Yang Zhang, Thomas Christensen, Hoi Chun Po, Li Jing, Liang Fu, Marin Soljačić

Topological materials present unconventional electronic properties that make them attractive for both basic science and next-generation technological applications.

Fractional corner magnetization of collinear antiferromagnets

no code implementations13 Jan 2021 Haruki Watanabe, Yasuyuki Kato, Hoi Chun Po, Yukitoshi Motome

Recent studies revealed that the electric multipole moments of insulators result in fractional electric charges localized to the hinges and corners of the sample.

Quantization Strongly Correlated Electrons Mesoscale and Nanoscale Physics Statistical Mechanics

Higher-Order Nonlinear Anomalous Hall Effects Induced by Berry Curvature Multipoles

no code implementations31 Dec 2020 Cheng-Ping Zhang, Xue-Jian Gao, Ying-Ming Xie, Hoi Chun Po, K. T. Law

In recent years, it had been shown that Berry curvature monopoles and dipoles play essential roles in the anomalous Hall effect and the nonlinear Hall effect respectively.

Mesoscale and Nanoscale Physics Materials Science

Topological Invariants of a Filling-Enforced Quantum Band Insulator

no code implementations22 Oct 2020 Abijith Krishnan, Ashvin Vishwanath, Hoi Chun Po

Such a locking raises intriguing questions about the generality of the band-inversion paradigm in describing the transition between trivial and topological phases.

Mesoscale and Nanoscale Physics Strongly Correlated Electrons

Derivation of Wannier orbitals and minimal-basis tight-binding hamiltonians for twisted bilayer graphene: a first-principles approach

1 code implementation14 Jul 2019 Stephen Carr, Shiang Fang, Hoi Chun Po, Ashvin Vishwanath, Efthimios Kaxiras

Twisted bilayer graphene (TBLG) has emerged as an important platform for studying correlated phenomena, including unconventional superconductivity, in two-dimensional systems.

Strongly Correlated Electrons Mesoscale and Nanoscale Physics

Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene

1 code implementation7 Aug 2018 Hoi Chun Po, Liujun Zou, T. Senthil, Ashvin Vishwanath

Correlated insulators and superconductivity have been observed in "magic-angle" twisted bilayer graphene, when the nearly flat bands close to neutrality are partially filled.

Strongly Correlated Electrons Materials Science Superconductivity

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