106 citations · 158 across the 8 of their papers we have counts for
8 papers
Quantum Geometry and Topology of Bulk Plasmons in Weyl Metals
Hong-Yi Xie, Peter Abbamonte, Bruno Uchoa
We address the quantum geometric structure of plasmons in Fermi surfaces enclosing a topological charge. We demonstrate that Weyl fermion plasmons have monopole structure, are topo…
Optical selection rules of topological excitons in flat bands
Mara Lozano, Hong-Yi Xie, Bruno Uchoa
Topological excitons are superpositions of electron-hole pair states, characterized by an envelope function with finite vorticity in momentum space. This vorticity is determined by…
Thermal and thermoelectric transport in flat bands with non-trivial quantum geometry
Kevin Wen, Hong-Yi Xie, Assa Auerbach +1
Although quasiparticles in flat bands have zero group velocity, they can display an anomalous velocity due to the quantum geometry. We address the thermal and thermoelectric transp…
Electrical Control of Exciton-Polariton Condensate Josephson Junctions via Exciton Stark Effect
Hua Wang, Hong-Yi Xie, Kieran Mullen
We propose harnessing the tools of modern nano-fabrication to provide electrical control of exciton-polariton (EP) condensates. We develop the theory of a device based on the Josep…
Prominent Josephson tunneling between twisted single copper oxide planes of BiSrLaxCuO
Heng Wang, Yuying Zhu, Zhonghua Bai +16
Josephson tunneling in twisted cuprate junctions provides a litmus test for the pairing symmetry, which is fundamental for understanding the microscopic mechanism of high temperatu…
Theory of topological exciton insulators and condensates in flat Chern bands
Hong-Yi Xie, Pouyan Ghaemi, Matteo Mitrano +1
Excitons are the neutral quasiparticles that form when Coulomb interactions create bound states between electrons and holes. Due to their bosonic nature, excitons are expected to c…
Photogalvanic effect in Weyl semimetals
E. J. König, H. -Y. Xie, D. A. Pesin +1
We theoretically study the impact of impurities on the photogalvanic effect (PGE) in Weyl semimetals with weakly tilted Weyl cones. Our calculations are based on a two-nodes model…
Localization in coupled heterogeneously disordered transport channels on the Bethe lattice
Hong-Yi Xie, M. Müller
We study the Anderson localization in systems, in which transport channels with rather different properties are coupled together. This problem arises naturally in systems of hybrid…