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Stable two-dimensional dumbbell stanene: a quantum spin Hall insulator
Peizhe Tang, Pengcheng Chen, Wendong Cao +7
We predict from first-principles calculations a novel structure of stanene with dumbbell units (DB), and show that it is a two-dimensional topological insulator with inverted band…
Generation and Electric Control of Spin-Coupled Valley Current in WSe2
Hongtao Yuan, Xinqiang Wang, Biao Lian +8
The valley degree of freedom in layered transition-metal dichalcogenides (MX2) provides the opportunity to extend functionalities of novel spintronics and valleytronics devices. Du…
Enhanced Thermoelectric Performance and Anomalous Seebeck Effects in Topological Insulators
Yong Xu, Zhongxue Gan, Shou-Cheng Zhang
Improving the thermoelectric figure of merit zT is one of the greatest challenges in material science. Recent discovery of topological insulators (TIs) offers new promise in this p…
Quantum Spin Hall and Quantum Anomalous Hall States Realized in Junction Quantum Wells
Haijun Zhang, Yong Xu, Jing Wang +1
Both quantum spin Hall and quantum anomalous Hall states are novel states of quantum matter with promising applications. We propose junction quantum wells comprising II-VI, III-V o…
Tunable Thermal Conduction in Graphane Nanoribbons
Dengfeng Li, Yong Xu, Xiaobin Chen +2
Graphane and graphene are both two-dimensional materials but of different bonding configurations, which can result in distinct thermal conduction properties. We simulate thermal co…
Thermal and Thermoelectric Properties of Graphene
Yong Xu, Zuanyi Li, Wenhui Duan
The subject of thermal transport at the mesoscopic scale and in low-dimensional systems is interesting for both fundamental research and practical applications. As the first exampl…