196 citations · 1.3k across the 35 of their papers we have counts for
5 papers · 1 filter
Hyperbolic polaritons in topological nodal ring semimetals
Ashutosh Singh, Maria Sebastian, Yuanping Chen +2
In mirror-symmetric systems, there is a possibility of the realization of extended gapless electronic states characterized as nodal lines or rings. Strain induced modifications to…
Quantum Paracrystalline Shear Modes of the Electron Liquid
Jun Yong Khoo, Po-Yao Chang, Falko Pientka +1
Unlike classical fluids, a quantum Fermi liquid can support a long-lived and propagating shear sound wave at arbitrarily small wave vectors and frequencies, reminiscent of the tran…
Topology and entanglement in quench dynamics
Po-Yao Chang
We classify the topology of quench dynamics by homotopy groups. A relation between the topological invariant of a post-quench order parameter and the topological invariant of a sta…
Weyl-link semimetals
Po-Yao Chang, Chuck-Hou Yee
A family of topological semimetallic phases where twofold degenerate gapless points form linked rings is introduced. We refer to this phase as Weyl-link semimetals. A concrete two-…
Conductance through a single impurity in the metallic zigzag carbon nanotube
Po-Yao Chang, Hsiu-Hau Lin
We investigate transport through a single impurity in metallic zigzag carbon nanotube and find the conductance sensitively depends on the impurity strength and the bias voltage. It…