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Borophene, a monoatomic layer of boron atoms, stands out among two-dimensional (2D) materials, with its versatile properties of polymorphism, metallicity, plasmonics, superconductivity, tantalizing for physics exploration and…

Materials Science · Physics 2021-11-25 Qiyuan Ruan , Luqing Wang , Ksenia V. Bets , Boris I. Yakobson

We numerically study the electrical and thermoelectric transport properties in phosphorene in the presence of both a magnetic field and disorder. The quantized Hall conductivity is similar to that of a conventional two-dimensional electron…

Mesoscale and Nanoscale Physics · Physics 2021-08-17 R. Ma , S. W. Liu , M. X. Deng , L. Sheng , D. Y. Xing , D. N. Sheng

The research of two-dimensional (2D) materials with atomic-scale thicknesses and unique optical properties has become a frontier in photonics and electronics. Borophene, a newly reported 2D material provides a novel building block for…

Optics · Physics 2021-04-08 Tingting Liu , Chaobiao Zhou , Shuyuan Xiao

Using field-emission resonance spectroscopy with an ultrahigh vacuum scanning tunneling microscope, we reveal Stark-shifted image-potential states of the v_1/6 and v_1/5 borophene polymorphs on Ag(111) with long lifetimes, suggesting high…

Materials Science · Physics 2021-01-27 Xiaolong Liu , Luqing Wang , Boris I. Yakobson , Mark C. Hersam

Engineering atomic-scale structures allows great manipulation of physical properties and chemical processes for advanced technology. We show that the B atoms deployed at the centers of honeycombs in boron sheets, borophene, behave as nearly…

Two dimensional materials are attracting new research for optoelectronics and spintronics due to their unique physical properties. A wide range of emerging spintronic devices are achieved from parent and doped two dimensional materials.…

Materials Science · Physics 2023-09-15 S. Koley

We study the electronic transport through uniformly bent carbon nanotubes. For this purpose, we describe the nanotube with the tight-binding model and calculate the local current flow by employing non-equilibrium Green's functions (NEGF) in…

Mesoscale and Nanoscale Physics · Physics 2023-05-26 Eric Kleinherbers , Thomas Stegmann , Nikodem Szpak

Engineering of cooling mechanism is of primary importance for the development of nanoelectronics. Whereas radiation cooling is rather inefficient in nowadays electronic devices, the strong anisotropy of 2D materials allows for enhanced…

Mesoscale and Nanoscale Physics · Physics 2019-10-11 E. Baudin , C. Voisin , B. Placais

The tuning black phosphorene properties such as structural, electronic, transport are explored via substitutional C-doped. We employed density functional theory (DFT) calculations in combination with non-equilibrium Green's function (NEGF)…

Materials Science · Physics 2019-12-02 Renan N. Pedrosa , Wanderlã L. Scopel , Rodrigo G. Amorim

A computation methodology based on ab initio evolutionary algorithms and the spin-polarized density functional theory was developed to predict two-dimensional (2D) magnetic materials. Its application to a model system borophene reveals an…

We investigate the transmission of electrons between conducting nanoribbon leads oriented at multiples of 60 degrees with respect to one another, connected either directly or through graphene polygons. A mode-matching analysis suggests that…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 A. Iyengar , T. Luo , H. A. Fertig , L. Brey

Two-dimensional (2D) materials have captured the attention of the scientific community due to the wide range of unique properties at nanometer-scale thicknesses. While significant exploratory research in 2D materials has been achieved, the…

Materials Science · Physics 2018-05-23 Vinod K. Sangwan , Mark C. Hersam

Recent synthesis of monolayer borophene (triangle boron monolayer) on the substrate opens the era of boron nanosheet (Science, 350, 1513, $\mathbf{2015}$), but the structural stability and novel physical properties are still open issues.…

Materials Science · Physics 2016-02-12 Lichun Xu , Aijun Du , Liangzhi Kou

Bilayer borophene, very recently synthesized on Ag and Cu, possesses extremely flat large surface and excellent conductivity. Besides, the van der Waals gap of bilayer borophene can be intercalated by metal atoms, thereby tailoring the…

Materials Science · Physics 2023-09-07 Yuan Chang , Hongsheng Liu , Jiaxu Liu , Jijun Zhao , Yong-Wei Zhang , Junfeng Gao

Electron transport and quantum conductance through an armchair graphene and its oxidized graphene- containing form were investigated by the density functional theory (DFT) method and the implementation of the non-equilibrium Green function…

Mesoscale and Nanoscale Physics · Physics 2015-01-29 Badie Ghavami , Alireza Rastkar-Ebrahimzadeh

We characterize the transport properties of functionalized graphene nanoribbons using extensive first-principles calculations based on density functional theory (DFT) that encompass both monovalent and divalent ligands, hydrogenated defects…

Materials Science · Physics 2009-09-08 Giovanni Cantele , Young-Su Lee , Domenico Ninno , Nicola Marzari

This paper presents an ab initio methodology to account for electron-phonon interactions in 2D materials, focusing on transition metal dichalcogenides (TMDCs). It combines density functional theory and maximally localized Wannier functions…

Mesoscale and Nanoscale Physics · Physics 2023-12-04 Jonathan Backman , Youseung Lee , Mathieu Luisier

We present first-principles calculations on electron transport through Na nanowires at finite bias voltages. The nanowire exhibits a nonlinear current-voltage characteristic and negative differential conductance. The latter is explained by…

Materials Science · Physics 2016-08-31 Shigeru Tsukamoto , Kikuji Hirose

Among exciting recent advances in the field of two-dimensional (2D) materials, the successful fabrications of the C60 fullerene networks has been a particularly inspiring accomplishment. Motivated by the recent achievements, herein we…

Materials Science · Physics 2023-08-11 Bohayra Mortazavi , Yves Remond , Hongyuan Fang , Timon Rabczuk , Xiaoying Zhuang

We study the mechanical properties of two-dimensional (2D) boron, borophenes, by first-principles calculations. The recently synthesized borophene with 1/6 concentration of hollow hexagons (HH) is shown to have in-plane modulus C up to 210…

Materials Science · Physics 2017-01-12 Zhuhua Zhang , Yang Yang , Evgeni S. Penev , Boris I. Yakobson