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High-Temperature Quantum Anomalous Hall Insulators in Lithium-Decorated Iron-Based Superconductor Materials
Yang Li, Jiaheng Li, Meng Ye +5
Quantum anomalous Hall (QAH) insulator is the key material to study emergent topological quantum effects, but its ultralow working temperature limits experiments. Here, by first-pr…
Higher-order topological insulators and semimetals in generalized Aubry-André-Harper models
Qi-Bo Zeng, Yan-Bin Yang, Yong Xu
Higher-order topological phases of matter have been extensively studied in various areas of physics. While the Aubry-André-Harper model provides a paradigmatic example to study top…
Enhancement of superconductivity in organic-inorganic hybrid topological materials
Haoxiong Zhang, Awabaikeli Rousuli, Shengchun Shen +10
Inducing or enhancing superconductivity in topological materials is an important route toward topological superconductivity. Reducing the thickness of transition metal dichalcogeni…
Topological Insulators beyond Energy Band Characterization
Yan-Bin Yang, Kai Li, Yong Xu
Topological phases of matter are generally characterized by topological properties of energy bands of a system. Their transitions under preserved symmetries occur through closing a…
Type-II quadrupole topological insulators
Yan-Bin Yang, Kai Li, L. -M. Duan +1
Modern theory of electric polarization is formulated by the Berry phase, which, when quantized, leads to topological phases of matter. Such a formulation has recently been extended…
Quantum Spin Hall Insulators in Tin Films: Beyond Stanene
Jiaheng Li, Yong Xu
Large-gap quantum spin Hall (QSH) insulators were previously predicted in stanene and its derivatives. Beyond stanene that is the thinnest -Sn(111) film, we propose to explore Q…