4 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…
Nature of the Topological Transition of the Kitaev Model in [111] Magnetic Field
S. Thiagarajan, C. Watson, T. Yzeiri +3
We investigate the nature of the topological phase transition of the antiferromagnetic Kitaev model on the honeycomb lattice in the presence of a magnetic field along the [111] dir…
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…