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Two-dimensional and layered materials, such as graphene, have emerged in recent years for their potential use in several applications in technology, for example in electronics, bioelectronics, optoelectronics and related fields.…

材料科学 · 物理学 2020-07-10 Francesco Mercuri

The electronic properties of monolayer phosphorene are exotic due to its puckered structure and large intrinsic direct band gap. We derive and discuss its band structure in the presence of a perpendicular magnetic field. Further, we…

介观与纳米尺度物理 · 物理学 2015-07-23 M. Tahir , P. Vasilopoulos , F. M. Peeters

The defects, the behavior of 3d electrons and the hyperfine interactions in binary Fe-Al alloys with different Al contents have been studied by the measurements of positron lifetime spectra, coincidence Doppler broadening spectra of…

材料科学 · 物理学 2015-06-17 Wen Deng , Xiao-Xiang Sun , Shao-Xi Tan , Yu-Xia Li , Ding-Kang Xiong , Yu-Yang Huang

The small difference between the rhombohedral phosphorus lattice ($A$-7 phase) and the simple cubic phase as well as between phosphorene and the cubic structure is used in order to construct their quasiparticle band dispersion. We exploit…

介观与纳米尺度物理 · 物理学 2014-07-01 L. A. Falkovsky

A new implementation of stochastic many-body perturbation theory for periodic 2D systems is presented. The method is used to compute quasiparticle excitations in twisted bilayer phosphorene. Excitation energies are studied using stochastic…

介观与纳米尺度物理 · 物理学 2020-04-22 Jacob Brooks , Guorong Weng , Stephanie Taylor , Vojtech Vlcek

Phosphorene is a bidimensional material that has properties useful for semiconductor devices. In this work we studied the electronic and optical properties of this material using the $GW$ approximation and the Bethe-Salpeter equation (BSE)…

介观与纳米尺度物理 · 物理学 2017-11-16 Fábio Ferreira , Ricardo Mendes Ribeiro

Phosphorene is a new two-dimensional material composed of a single or few atomic layers of black phosphorus. Phosphorene has both an intrinsic tunable direct band gap and high carrier mobility values, which make it suitable for a large…

Using the self-consistent Hartree-Fock approximation, we study the compressibility instability of the interacting electrons in bilayer graphene. The chemical potential and the compressibility of the electrons can be significantly altered by…

强关联电子 · 物理学 2011-01-11 Xin-Zhong Yan , C. S. Ting

This study aimed primarily at completing and extending the characterization of the crystallographic, spectroscopic and optical properties of polar, biaxial, optically negative 2-aminopyrimidinium(1+) hydrogen phosphite. Besides the…

Experimental studies on two-dimensional (2D) materials are still in the early stages, and most of the theoretical studies performed to screen these materials are limited to the room-temperature carrier-mobility in the free standing 2D…

介观与纳米尺度物理 · 物理学 2020-07-30 Gautam Gaddemane , Maarten L. Van de Put , William G. Vandenberghe , Edward Chen , Massimo V. Fischetti

We investigate magnetism and band structure engineering in Moir\'e superlattice of blue phosphorus ($\beta$-P) and grey arsenene ($\beta$-As) bilayers, using \textit{ab initio} calculations. The electronic states near the valence and…

Monolayer black and blue phosphorenes possess electronic and optical properties that result in unique features when the two materials are stacked. We devise a low-strain van-der-Waals double layer and investigate its properties with ab…

材料科学 · 物理学 2021-01-29 Michele Re Fiorentin , Giancarlo Cicero , Maurizia Palummo

We perform systematic investigation on the geometric, energetic and electronic properties of group IV-VI binary monolayers (XY), which are the counterparts of phosphorene, by employing density functional theory based electronic structure…

介观与纳米尺度物理 · 物理学 2016-04-19 C. Kamal , Aparna Chakrabarti , Motohiko Ezawa

Atomic vacancy defects in single unit cell thick hexagonal boron nitride are of significant interest because of their photophysical properties, including single-photon emission, and promising applications in quantum communication and…

Recently, phosphorene electronic and optoelectronic prototype devices have been fabricated with various metal electrodes. We systematically explore for the first time the contact properties of monolayer (ML) phosphorene with a series of…

介观与纳米尺度物理 · 物理学 2015-07-10 Yuanyuan Pan , Yangyang Wang , Meng Ye , Ruge Quhe , Hongxia Zhong , Zhigang Song , Xiyou Peng , Dapeng Yu , Jinbo Yang , Junjie Shi , Ju Li , Jing Lu

Density functional theory calculations are performed on phosphorene quantum dots having different shapes and edge terminations to investigate their structure stability, electronic properties, and gas sensing ability. All the selected…

介观与纳米尺度物理 · 物理学 2018-12-05 Hazem Abdelsalam , Vasil A. Saroka , Waleed O. Younis

In the context of two-dimensional metal-free photocatalyst, we investigate the electronic, optical and excitonic properties of phosphorene derivatives within first-principles approach. While two-dimensional phosphorene does not catalyze the…

材料科学 · 物理学 2018-06-26 Srilatha Arra , K. R. Ramaya , Rohit Babar , Mukul Kabir

We investigate theoretically the anisotropic electronic and optical behaviors of a monolayer black phosphorus (phosphorene) modulated by periodic potential superlattices in arbitrary directions. We demonstrate that different strength and…

介观与纳米尺度物理 · 物理学 2019-12-17 Xiaojing Li , Wen Yang , Kun Luo , Zhenhua Wu

The recent experimental characterization of B80- via photoelectron spectroscopy stimulated renewed interest in exploring B80 clusters. Here, a D3h-symmetric B80 bilayer structure has been proposed using density functional theory…

原子与分子团簇 · 物理学 2025-11-18 Yi-Sha Chen , Jing-Jing Guo , Peng-Bo Liu , Hui-Yan Zhao , Jing Wang , Ying Liu

Graphene has become in last decades a paradigmatic example of two-dimensional and so-called van-der-Waals layered materials, showing large anisotropy in their physical properties. Here we study the elastic properties and mechanical…

材料科学 · 物理学 2023-11-22 Carlos P. Herrero , Rafael Ramirez