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Graphene electronics has motivated much of graphene science for the past decade. A primary goal was to develop high mobility semiconducting graphene with a band gap that is large enough for high performance applications. Graphene ribbons…

We theoretically investigate the electronic and transport properties of a semi-Dirac material under the influence of an external time dependent periodic driving field (irradiation) by means of Floquet theory. We explore the inelastic…

Mesoscale and Nanoscale Physics · Physics 2018-12-26 SK Firoz Islam , Arijit Saha

Fullerenes have several advantages as potential materials for organic spintronics. Through a theoretical first-principles study, we report that fullerene C$_{60}$ adsorption can induce a magnetic reconstruction in a Ni(111) surface and…

Mesoscale and Nanoscale Physics · Physics 2015-07-31 R. Pang , X. Shi , M. A. van Hove

Magnetic monopoles, elusive in high-energy physics, have been realised as emergent quasiparticles in solid-state systems, where their unique properties hold promise for novel spintronic applications. Magnetic monopoles have been invoked in…

The Technical Committee of the IEEE Magnetics Society has selected 7 research topics to develop their roadmaps, where major developments should be listed alongside expected timelines; (i) hard disk drives, (ii) magnetic random access…

Graphene is a promising contender to succeed the throne of silicon in electronics. To this goal, large-scale epitaxial growth of graphene on substrates should be developed. Among various methods along this line, epitaxial growth of graphene…

Silicon nanowires grown along the <100>-direction with a bulk Si core are studied with density functional calculations. Two surface reconstructions prevail after exploration of a large fraction of the phase space of nanowire…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 R. Rurali , N. Lorente

Two-dimensional (2D) Dirac-like electron gases have attracted tremendous research interest ever since the discovery of free-standing graphene. The linear energy dispersion and non-trivial Berry phase play the pivotal role in the remarkable…

We report the theoretical prediction of a new class of spintronic materials, namely bipolar magnetic semiconductor (BMS), which is also supported by our experimental data. BMS acquires a unique band structure with unequal band gaps for spin…

Applied Physics · Physics 2020-11-21 Jadupati Nag , Deepika Rani , Jiban Kangsabanik , P. D. Babu , K. G. Suresh , Aftab Alam

Semiconductor Bi$_2$O$_2$Se nanolayers of high crystal quality have been realized via epitaxial growth. These two-dimensional (2D) materials possess excellent electron transport properties with potential application in nanoelectronics. It…

Mesoscale and Nanoscale Physics · Physics 2018-02-12 Mengmeng Meng , Shaoyun Huang , Congwei Tan , Jinxiong Wu , Yumei Jing , Hailin Peng , H. Q. Xu

Epitaxial bismuthene on SiC(0001) hosts symmetry-protected metallic edge states within a large bulk band gap, establishing it as a promising two-dimensional topological insulator for hightemperature quantum spin Hall (QSH) transport. Here…

Doping of silicon via phosphene exposures alternating with molecular beam epitaxy overgrowth is a path to Si:P substrates for conventional microelectronics and quantum information technologies. The technique also provides a new and…

A novel material consisting of a monolayer of C$_{60}$ buckyballs with hexagonal symmetry has recently been observed experimentally, named graphullerene. In this study, we present a comprehensive \textit{ab-initio} theoretical analysis of…

Materials Science · Physics 2024-05-28 M. A. Khan , Madeeha Atif , Michael N. Leuenberger

We propose a new band engineering scheme on the biphenylene network, a newly synthesized carbon allotrope. First, we investigate the mechanism for the appearance of type II Dirac fermion in a pristine biphenylene network. We show that the…

Strongly Correlated Electrons · Physics 2024-02-01 Seongjun Mo , Jaeuk Seo , Seok-Kyun Son , Sejoong Kim , Jun-Won Rhim , Hoonkyung Lee

Driven by applications in information technology, the search for new materials with stable, long-range magnetic ordering continues. Metalorganic magnets, involving the coordination of metal atoms with specific organic ligands, are a focus…

The magnetic correlations at the superconductor/ferromagnet (S/F) interfaces play a crucial role in realizing dissipation-less spin-based logic and memory technologies, such as triplet-supercurrent spin-valves and "{\pi}" Josephson…

Silicene monolayers grown on Ag(111) surfaces demonstrate a band gap that is tunable by oxygen adatoms from semimetallic to semiconducting type. By using low-temperature scanning tunneling microscopy, it is found that the adsorption…

In the past few years, we have witnessed an increased interest in the use of 2D materials for the realization of hybrid photonic nonlinear waveguides. Although graphene has attracted most of the attention, other families of 2D materials…

Electronic structures of SiC nanoribbons have been studied by spin-polarized density functional calculations. The armchair nanoribbons are nonmagnetic semiconductor, while the zigzag nanoribbons are magnetic metal. The spin polarization in…

Materials Science · Physics 2009-11-13 Lian Sun , Yafei Li , Zhenyu Li , Qunxiang Li , 1 Zhen Zhou , Zhongfang Chen , Jinlong Yang , J. G. Hou

We investigate the possible magnetism on the Si(111)-$\sqrt 3 \times \sqrt 3$ surface, which is stabilized for highly boron-doped samples, by using first-principles calculations. When the silicon adatom on top of a boron atom is removed to…

Materials Science · Physics 2018-04-04 Chang-Youn Moon , Daejin Eom , Ja-Yong Koo
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