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-symmetric higher-order topological crystalline insulators in atomically thin transition-metal dichalcogenides
Shifeng Qian, Gui-bin Liu, Cheng-Cheng Liu +1
Based on first-principles calculations and symmetry analysis, we predict atomically thin ( layers) 2H group-VIB TMDs ( = Mo, W; = S, Se, Te) are large-gap higher…
Encyclopedia of emergent particles in three-dimensional crystals
Zhi-Ming Yu, Zeying Zhang, Gui-Bin Liu +5
The past decade has witnessed a surge of interest in exploring emergent particles in condensed matter systems. Novel particles, emerged as excitations around exotic band degeneracy…
Engineering symmetry breaking in two-dimensional layered materials
Luojun Du, Tawfique Hasan, Andres Castellanos-Gomez +4
Symmetry breaking in two-dimensional layered materials plays a significant role in their macroscopic electrical, optical, magnetic and topological properties, including but not lim…
Brightened spin-triplet interlayer excitons and optical selection rules in van der Waals heterobilayers
Hongyi Yu, Gui-Bin Liu, Wang Yao
We investigate the optical properties of spin-triplet interlayer excitons in heterobilayer transition metal dichalcogenides in comparison with the spin-singlet ones. Surprisingly,…
Moiré excitons: from programmable quantum emitter arrays to spin-orbit coupled artificial lattices
Hongyi Yu, Gui-Bin Liu, Jianju Tang +2
Highly uniform and ordered nanodot arrays are crucial for high performance quantum optoelectronics including new semiconductor lasers and single photon emitters, and for synthesizi…
Interlayer coupling in commensurate and incommensurate bilayer structures of transition metal dichalcogenides
Yong Wang, Zhan Wang, Wang Yao +2
The interlayer couplings in commensurate and incommensurate bilayer structures of transition metal dichalcogenides are investigated with perturbative treatment. The interlayer coup…