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The Origin of Two-dimensional Electron Gas in ZnMgO/ZnO Heterostructures
Xiang-Hong Chen, Dong-Yu Hou, Zhi-Xin Hu +2
Although the two-dimensional electron gas (2DEG) in (001) ZnMgO/ZnO heterostructures has been discovered for about twenty years, the origin of the 2DEG is still inconcl…
High-mobility two-dimensional electron gas in -AlO/SrTiO heterostructures
Xiang-Hong Chen, Zhi-Xin Hu, Kuang-Hong Gao +1
The origin of the two-dimensional electron gas (2DEG) in the interface between -AlO (GAO) and SrTiO (STO) (GAO/STO) as well as the reason for the high mobility of th…
Interface coupling in twisted multilayer graphene by resonant Raman spectroscopy of layer breathing modes
Jiang-Bin Wu, Zhi-Xin Hu, Xin Zhang +9
Raman spectroscopy is the prime non-destructive characterization tool for graphene and related layered materials. The shear (C) and layer breathing modes (LBMs) are due to relative…
Interlayer electronic hybridization leads to exceptional thickness-dependent vibrational properties in few-layer black phosphorus
Zhi-Xin Hu, Xianghua Kong, Jingsi Qiao +2
Stacking two-dimensional (2D) materials into multi-layers or heterostructures, known as van der Waals (vdW) epitaxy, is an essential degree of freedom for tuning their properties o…
High-mobility transport anisotropy and linear dichroism in few-layer black phosphorus
Jingsi Qiao, Xianghua Kong, Zhi-Xin Hu +2
Two-dimensional crystals are emerging materials for nanoelectronics. Development of the field requires candidate systems with both a high carrier mobility and, in contrast to graph…
Adsorption of PTCDA and C60 on KBr(001): electrostatic interaction versus electronic hybridization
Q. Jia, W. Ji, S. A. Burke +3
The adsorption of functional molecules on insulator surfaces is of great importance to molecular electronics. We present a systematical investigation of geometric and electronic pr…
Role of the dispersion force in modeling the interfacial properties of molecule-metal interfaces: adsorption of thiophene on copper surfaces
Zhi-Xin Hu, Haiping Lan, Wei Ji
We present density functional theory calculations of the geometry, adsorption energy and electronic structure of thiophene adsorbed on Cu(111), Cu(110) and Cu(100) surfaces. Our ca…
Molecular ordering of glycine on Cu(100): the p() superstructure
Zhi-Xin Hu, Wei Ji, Hong Guo
Glycine molecules deposited on Cu(100) surface give rise to an anisotropic free-electron-like (FEL) electronic dispersion in its p(24) superstructure, as reported in recent…