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Electronic structure properties of nanowires (NW) with diameters of 1.5 nm and 3 nm based on semimetallic $\alpha$-Sn are investigated by employing density functional theory and perturbative $GW$ methods. We explore the dependence of…

Materials Science · Physics 2017-01-04 Alfonso Sanchez-Soares , Conor O'Donnell , James C. Greer

Semiconductor nanowhiskers made of III-V compounds exhibit great potential for technological applications. Controlling the growth conditions, such as temperature and diameter, it is possible to alternate between zinc blend and wurtzite…

Mesoscale and Nanoscale Physics · Physics 2012-02-14 P. E. Faria , G. M. Sipahi

Optoelectronic micro- and nanostructures have a vast parameter space to explore for modification and optimisation of their functional performance. This paper reports on a data-led approach using high-throughput single nanostructure…

The search for new wide band gap materials is intensifying to satisfy the need for more advanced and energy efficient power electronic devices. Ga$_2$O$_3$ has emerged as an alternative to SiC and GaN, sparking a renewed interest in its…

Electronic structures for InxGa1-xAs nanowires with [100], [110], and [111] orientations and critical dimensions of approximately 2 nm are treated within the framework of density functional theory. Explicit band structures are calculated…

Mesoscale and Nanoscale Physics · Physics 2018-02-23 Pedram Razavi , James C. Greer

We survey the state-of-the-art knowledge of ferroelectric and ferroelastic group-IV monochalcogenide monolayers. These semiconductors feature remarkable structural and mechanical properties, such as a switchable in-plane spontaneous…

Mesoscale and Nanoscale Physics · Physics 2021-03-12 Salvador Barraza-Lopez , Benjamin M. Fregoso , John W. Villanova , Stuart S. P. Parkin , Kai Chang

Density functional theory and molecular dynamics simulations have been used to optimize the structure of nanowires of SiO2. The starting structures were based on b-cristobalite, orthotridymite, b-tridymite, and rutile crystals. The analysis…

Materials Science · Physics 2012-08-02 José I. Martínez , Federico Calle-Vallejo , Clifford M. Krowne , Julio A. Alonso

Two-dimensional (2D) group V elemental materials have attracted widespread attention due to their nonzero band gap while displaying high electron mobility. Using first-principles calculations, we propose a series of new elemental bilayers…

Materials Science · Physics 2017-07-19 Xiangru Kong , Linyang Li , Ortwin Leenaerts , Xiong-jun Liu , François M. Peeters

In this paper we review the theory of silicon nanowires. We focus on nanowires with diameters below 10 nm, where quantum effects become important and the properties diverge significantly from those of bulk silicon. These wires can be…

Mesoscale and Nanoscale Physics · Physics 2019-10-22 Riccardo Rurali

The structural investigations of nanomaterials motivated by their large variety and diverse set of applications have attracted considerable attention. In particular, the ever-improving machinery, both in laboratory and at large scale…

Materials Science · Physics 2020-04-07 Dominik Kriegner , Milan Dopita

The two-dimensional (2D) IV-V semiconductors have attracted much attention due to their fascinating electronic and optical properties. In this work, we predicted three phases of silicon nitrides, denoted $\alpha$-Si$_{2}$N$_{2}$,…

Materials Science · Physics 2024-04-02 Jiesen Li , Wanxing Lin , Junjun Shi , Feng Zhu , Haiwen Xie , Dao-Xin Yao

The increasing interest of nanowhiskers for technological applications has led to the observation of the zinc-blend/wurtzite polytypism. Polytypic nanowhiskers could also play, by their characteristics, an important role on the design of…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Paulo Eduardo de Faria Junior , Guilherme Matos Sipahi

Organic-inorganic hybrids may offer material properties not available from their inorganic components. However, they are typically less stable and disordered. Long-term stability study of the hybrid materials, over the anticipated lifespan…

Tailoring the specific stacking sequences (polytypes) of layered materials represents a powerful strategy to identify and design novel physical properties. While nanostructures built upon transition-metal dichalcogenides (TMDs) with either…

The stability and electronic structure of a single monatomic Al wire has been studied using the ab initio pseudopotential method. The Al wire undergoes two structural rearrangements under compression, i.e., zigzag configurations at angles…

Materials Science · Physics 2015-06-24 Jin-Cheng Zheng , Hui-Qiong Wang , A. T. S. Wee , C. H. A. Huan

We review principles and trends in the use of semiconductor nanowires (NWs) as gain media for stimulated emission and lasing. Semiconductor nanowires have recently been widely studied for use in integrated optoelectronic devices, such as…

Mesoscale and Nanoscale Physics · Physics 2018-09-06 C. Couteau , A. Larrue , C. Wilhelm , C. Soci

Group IV and V monolayers are very crucial 2D materials for their high carrier mobilities, tunable band gaps, and optical linear dichroism. Very recently, a novel group IV-V binary compound, Sn2Bi, has been synthesized on silicon substrate,…

The realization of the stable structure of Heusler compounds and the study of different properties is an important step for their potential application in spintronics and magnetoelectronic devices. In this paper, using the plane-wave…

The last two decades, in particular, have witnessed a large volume of research revolving around structure-property correlation in Carbon based nanocomposites, synthesized by several methods.In the simplest of terms, the electronic…

Materials Science · Physics 2021-10-07 Manab Mallik , Mainak Saha

For analyzing quantum transport in semiconductor devices, accurate electronic structures are critical for quantitative predictions. Here we report theoretical analysis of electronic structures of all III-V zinc-blende semiconductor…

Materials Science · Physics 2015-06-15 Yin Wang , Haitao Yin , Ronggen Cao , Ferdows Zahid , Yu Zhu , Lei Liu , Jian Wang , Hong Guo
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