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Topological Node-Line Semimetal in Three Dimensional Graphene Networks
Hongming Weng, Yunye Liang, Qiunan Xu +4
Graphene, a two dimensional (2D) carbon sheet, acquires many of its amazing properties from the Dirac point nature of its electronic structures with negligible spin-orbit coupling.…
Topological Insulator to Dirac Semimetal Transition Driven by Sign Change of Spin-Orbit Coupling in Thallium Nitride
Xian-Lei Sheng, Zhijun Wang, Rui Yu +3
Based on the first-principles calculations, we reveal that TlN, a simple binary compound with Wurtzite structure, is a three-dimensional (3D) topological insulator (TI) with effect…
Topological states of non-Dirac electrons on triangular lattice
Qi-Feng Liang, Rui Yu, Jian Zhou +1
We demonstrate the possibility of topological states for non-Dirac electrons. Specifically it is shown that, because of the crystal symmetry and time reversal symmetry,…
Model Hamiltonian for topological Kondo insulator SmB6
Rui Yu, HongMing Weng, Xiao Hu +2
Starting from the kp method in combination with first-principles calculations, we systematically derive the effective Hamiltonians that capture the low energy band structures of re…