380 citations · 5k across the 76 of their papers we have counts for
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Realization of ideal flat band by rotated d-orbitals in Kagome metals
Dongwook Kim, Feng Liu
Recently there has been intense interest in Kagome metals, which are expected to host flat bands (FBs). However, the observed FBs are non-ideal as they are not flat over the whole…
Topological field-effect transistor with quantized ON/OFF conductance of helical/chiral dislocation states
Xiaoyin Li, Feng Liu
Topology is a key ingredient driving the emergence of quantum devices. Topological field-effect transistor (TFET) has been proposed to outperform the conventional FET by replacing…
Negative Interatomic Spring Constant Manifested by Topological Phonon Flat Band
Bowen Xia, Hang Liu, Feng Liu
Phonons as bosons are different from electrons as fermions. Unlike interatomic electron hopping that can be either positive or negative and further tuned by spin-orbit coupling, in…
Effective Model for Fractional Topological Corner Modes in Quasicrystals
Citian Wang, Feng Liu, Huaqing Huang
High-order topological insulators (HOTIs), as generalized from topological crystalline insulators (TCIs), are characterized with lower-dimensional metallic boundary states protecte…
Screening 2D materials with topological flat bands
Hang Liu, Sheng Meng, Feng Liu
Topological flat band (TFB) has been proposed theoretically in various lattice models, to exhibit a rich spectrum of intriguing physical behaviors. However, the experimental demons…
Orbital Design of Flat Bands in Non-Line-Graph Lattices via Line-Graph Wavefunctions
Hang Liu, Gurjyot Sethi, Sheng Meng +1
Line-graph (LG) lattices are known for having flat bands (FBs) from the destructive interference of Bloch wavefunctions encoded in pure lattice symmetry. Here, we develop a generic…