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8 papers · 2 filters
Topological bands in one-dimensional periodic potentials
Yi Zheng, Shi-Jie Yang
We study the properties of the quantum states in the one-dimensional system with a shifted periodic potential in both the discrete model and the continuous model. With open boundar…
Quantum plateau of Andreev reflection induced by spin-orbit coupling
Luting Xu, Xin-Qi Li
In this work we uncover an interesting quantum plateau behavior for the Andreev reflection between a one-dimensional quantum wire and superconductor. The quantum plateau is achieve…
Revisit the spin-FET: Multiple reflections, inelastic scattering, and lateral size effects
Luting Xu, Xin-Qi Li, Qing-feng Sun
We revisit the spin-injected field effect transistor (spin-FET) by simulating a lattice model based on recursive lattice Green's function approach. In the one-dimensional case and…
Direct Probing Stacking Order and Electronic Spectrum of Rhombohedral Trilayer Graphene with Scanning Tunneling Microscopy
Rui Xu, Long-Jing Yin, Jia-Bin Qiao +3
Recently, the rhombohedral trilayer graphene (r-TLG) has attracted much attention because of its low-energy flat bands, which are predicted to result in many strongly correlated ph…
Electronic Bloch oscillation in bilayer graphene gradient superlattices
Hemeng Cheng, Changan Li, Tianxing Ma +3
We investigate the electronic Bloch oscillation in bilayer graphene gradient superlattices using transfer matrix method. By introducing two kinds of gradient potentials of square b…
In-plane Chiral Tunneling and Out-of-plane Valley-polarized Quantum Tunneling in Twisted Graphene Trilayer
Jia-Bin Qiao, Lin He
Here we show that twisted graphene trilayer made by misoriented stacking a graphene monolayer on top of a Bernal graphene bilayer can exhibit rich and tailored electronic propertie…