628 citations · 1.5k across the 38 of their papers we have counts for
6 papers · 1 filter
Cubic Dirac and quadruple Weyl points in screw-symmetric materials
Peng-Jen Chen, Wan-Ju Li, Ting-Kuo Lee
High-order topological charge is of intensive interest in the field of topological matters. In real materials, cubic Dirac point is rare and the chiral charge of one Weyl point (WP…
Emergence of topological phases from the extension of two-dimensional lattice with nonsymmorphic symmetries
Pok-Man Chiu, Cheng-Yi Huang, Wan-Ju Li +1
Young and Kane have given a great insight for 2D Dirac semimetals with nontrivial topology in the presence of nonsymmorphic crystalline symmetry. Based on one of 2D nonsymmorphic s…
Topological insulator ribbon: Surface states and dynamical response
Lei Hao, Peter Thalmeier, T. K. Lee
We study theoretically the distributions of charge and spin polarization of a topological insulator ribbon, with a realistic rectangular cross section. Due to constriction in two l…
Surface spectral function in the superconducting state of a topological insulator
Lei Hao, T. K. Lee
We discuss the surface spectral function of superconductors realized from a topological insulator, such as the copper-intercalated BiSe. These functions are calculated…
Thermopower of multilayer graphene
Lei Hao, T. K. Lee
We systematically calculate thermopower of biased and unbiased multilayer grphene systems. The effect of screening to a bias field perpendicular to the graphene planes is taken int…
Thermopower of gapped bilayer graphene
Lei Hao, T. K. Lee
We calculate thermopower of clean and impure bilayer graphene systems. Opening a band gap through the application of an external electric field is shown to greatly enhance the ther…