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The coherent charge transport through an illuminated graphene ribbon is studied as function of electronic doping, frequency and strength of the electromagnetic driving, for monochromatic circularly polarized light. We focus on the DC…

介观与纳米尺度物理 · 物理学 2017-12-13 Jonathan Atteia , Jens. H. Bardarson , Jérome Cayssol

A nanodevice consisting of a conductive cylinder in an axial magnetic field with one-dimensional wires attached to its lateral surface is considered. An explicit form for transmission and reflection coefficients of the system as a function…

介观与纳米尺度物理 · 物理学 2007-05-23 V. A. Margulis , M. A. Pyataev

We evaluate the electron transmission through a dangling-bond wire on Si(100)-H (2x1). Finite wires are modelled by decoupling semi-infinite Si electrodes from the dangling-bond wire with passivating H atoms. The calculations are performed…

We report a density-functional-theoretic study of the stability and electronic structure of two recently proposed borophene sheets with Pmmn symmetry and nonzero thickness. We then investigate nanoribbons (BNRs) derived from these…

介观与纳米尺度物理 · 物理学 2017-02-06 A García-Fuente , J Carrete , A Vega , L J Gallego

Based on density functional simulations combined with the Landauer transport theory, the mechanical strain impacts on the chemical bonds of phosphorene and their effects on the electronic properties are studied. Moreover, the effect of the…

材料科学 · 物理学 2018-10-01 Zahra Nourbakhsh , Reza Asgari

By using non-equilibrium Green's function (NEGF) method and tight-binding (TB) approximation, we investigated a perfect control on spin transport in a zigzag $\alpha^{\prime}$-boron nanoribbon ($\alpha^{\prime}$-BNR) as the must…

介观与纳米尺度物理 · 物理学 2022-10-17 Zahra Askarpour , Mohsen Farokhnezhad , Fahimeh norouzi , Mahdi Esmaeilzadeh

The structural, electronic and transport properties of metallocene molecules (MCp$_2$) and isolated or nanotube-encapsulated chains are studied by using a combination of density functional theory and non-equilibrium Green's functions. The…

材料科学 · 物理学 2016-08-16 V. M. García-Suárez , J. Ferrer , C. J. Lambert

Two-dimensional (2-D) transition metal dichalcogenides (TMDs) have shown numerous interesting physical and chemical properties, making them promising materials for electronic, optoelectronic, and energy applications. Tuning thermal…

材料科学 · 物理学 2016-09-07 Xiaokun Gu , Ronggui Yang

Recently a novel two-dimensional (2D) C$_{60}$ based crystal called quasi-hexagonal-phase fullerene (QHPF) has been fabricated and demonstrated to be a promising candidate for 2D electronic devices [Hou et al. Nature 606, 507-510 (2022)].…

计算物理 · 物理学 2023-02-17 Haikuan Dong , Chenyang Cao , Penghua Ying , Zheyong Fan , Ping Qian , Yanjing Su

For several years the electronic structure properties of the novel two-dimensional system silicene have been studied extensively. Electron transport across metal-silicence junctions, however, remains relatively unexplored. To address this…

材料科学 · 物理学 2015-04-15 Yun-Peng Wang , J. N. Fry , Hai-Ping Cheng

Two-dimensional (2D) boron-based materials have gained increasing interest due to their exceptional physicochemical properties and potential technological applications. In this way, borospherenes, a 2D Boron-based fullerene-like lattice…

Electronic conductance through a single molecule is sensitive towards its structural orientation between two electrodes, owing to the distribution of molecular orbitals and their coupling to the electrode levels, that are governed by…

介观与纳米尺度物理 · 物理学 2023-08-11 Koushik R. Das , Sudipta Dutta

Two-dimensional boron monolayer (borophene) stands out from the two-dimensional atomic layered materials due to its structural flexibility, tunable electronic and mechanical properties from a large number of allotropic materials. The…

材料科学 · 物理学 2022-05-31 Yuchong Kang , Xiaoyun Ma , Jing Fu , Kun Yang , Zongguo Wang , Haibo Li , Wei Ma , Jin Zhang

The experimental observation of the Dirac fermion states in $\beta_{12}$-borophene sheets and the discovery of their novel topological properties properties have made them a promising candidate for spintronic applications. Here, by…

介观与纳米尺度物理 · 物理学 2022-01-05 Fahimeh Norouzi , Mohsen Farokhnezhad , Mahdi Esmaeilzadeh , Bartlomiej Szafran

We study the electron transport through the quantum dot coupled to the normal metal and BCS-like superconductor (N - QD - S) in the presence of the Kondo effect and Andreev scattering. The system is described by the single impurity Anderson…

介观与纳米尺度物理 · 物理学 2009-11-10 M. Krawiec , K. I. Wysokinski

Hexagonal boron nitride (h-BN) is a two dimensional (2D) layered insulator with superior dielectric performance that offers excellent interaction with other 2D materials (e.g. graphene, MoS2). Large-area h-BN can be readily grown on…

Experimentally observation of borophene nanoribbons (BNRs) motivated us to carry out a comprehensive investigation on BNRs, decomposed from {\chi}_3 sheet, using density functional theory. Our results show that the stability and also the…

材料科学 · 物理学 2018-04-12 S. I. Vishkayi , M. B. Tagani

Fullerene functionalized carbon nanotubes -- NanoBuds -- form a novel class of hybrid carbon materials, which possesses many advantageous properties as compared to the pristine components. Here, we report a theoretical study of the…

介观与纳米尺度物理 · 物理学 2009-05-08 J. A. Furst , J. Hashemi , T. Markussen , M. Brandbyge , A. P. Jauho , R. M. Nieminen

The recent discovery of borophene, a two-dimensional allotrope of boron, raises many questions about its structure and its chemical and physical properties. Boron has a high chemical affinity to oxygen but little is known about the…

材料科学 · 物理学 2020-02-28 Florian M. Arnold , Gotthard Seifert , Jens Kunstmann

We study the effect of electron doping on the bonding character and stability of two-dimensional (2D) structures of elemental boron, called borophene, which is known to form many stable allotropes. Our {\em ab initio} calculations for the…

材料科学 · 物理学 2019-03-27 Dan Liu , David Tomanek