147 citations · 642 across the 27 of their papers we have counts for
4 papers · 1 filter
Klein-bottle quadrupole insulators and Dirac semimetals
Chang-An Li, Junsong Sun, Song-Bo Zhang +2
The Benalcazar-Bernevig-Hughes (BBH) quadrupole insulator model is a cornerstone model for higher-order topological phases. It requires π-flux threading through each plaquette of t…
Nonlinear planar magnetotransport due to tilted Dirac cones in topological materials
Arya Thenapparambil, Graciely Elias dos Santos, Chang-An Li +7
Nonlinear planar magnetotransport is ubiquitous in topological HgTe structures, both in tensile (topological insulator) or compressively strained layers (Weyl semimetal phase). We…
Anomalous Andreev Spectrum and Transport in Non-Hermitian Josephson Junctions
Chang-An Li, Hai-Peng Sun, Björn Trauzettel
We propose a phase-biased non-Hermitian Josephson junction (NHJJ) composed of two superconductors mediated by a short non-Hermitian link. Such a NHJJ is described by an effective n…
Hybrid higher-order skin-topological effect in hyperbolic lattices
Junsong Sun, Chang-An Li, Shiping Feng +1
We investigate the non-Hermitian Haldane model on hyperbolic and lattices, and showcase its intriguing topological properties in the simultaneous presence of…