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We found that magnetic ground state of one-dimensional atomic chains of carbon-transition metal compounds exhibit half-metallic properties. They are semiconductors for one spin-direction, but show metallic properties for the opposite…

Materials Science · Physics 2009-11-11 S. Dag , S. Tongay , T. Yildirim , E. Durgun , R. T. Senger , C. Y. Fong , S. Ciraci

The effects of edge chemistry on the relative stability and electronic properties of zigzag boron nitride nanoribbons (ZBNNRs) are investigated. Among all functional groups considered, fully hydroxylated ZBNNRs are found to be the most…

Materials Science · Physics 2014-01-16 Dana Krepel , Oded Hod

Large diameter single-wall boron nanotubes (SWBNT) produced by 2%Mg-mesoporous Al2O3 catalysis show diamagnetic transition at ~ 40 K and ~ 80 K, which is a serious indication for possible superconductivity (J.Phys.Chem.C113, (2009) 17661).…

Superconductivity · Physics 2015-06-04 P. Banacky , J. Noga , V. Szöcs

Superconducting transport properties of granular materials are greatly influenced by the microstructure. We show that in heavily boron-doped diamond films (HBDDF) films some sharp transport features can be manipulated by applying a magnetic…

Superconductivity · Physics 2017-10-17 Somnath Bhattacharyya , Christopher Coleman , Davie Mtsuko , Dmitri Churochkin

Molecular electronics on silicon has distinct advantages over its metallic counterpart. We describe a theoretical formalism for transport through semiconductor-molecule heterostructures, combining a semi-empirical treatment of the bulk…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 T. Rakshit , G-C. Liang , A. W. Ghosh , S. Datta

We would like to comment that the prediction of Half-mtallicity in only B edge H-passivated zigzag boron nitride nanoribbons (ZBNNR-BH), by Zheng et al.1, is not correct as their interpretation is erroneous. Since it is well known that for…

Mesoscale and Nanoscale Physics · Physics 2016-05-02 Hari Mohan Rai , Rajesh Kumar , Pankaj R. Sagdeo , Neeraj K. Jaiswal , Pankaj Srivastava

Electronic band structure and energetic stability of two types of and oriented silicon nanowires in beta-Sn phase with the surface terminated by hydrogen atoms were studied using density functional theory. It was found that beta-Sn…

Materials Science · Physics 2015-05-13 Pavel B. Sorokin , Pavel V. Avramov , Viktor A. Demin , Leonid A. Chernozatonskii

First-principles spin-polarized calculations have been performed on passivated Boron-Nitride Nanoribbons (BNNRs) with pentagon-heptagon line-defects (PHLDs) (also called as Stone-Wales line-defects). Two kinds of PHLDs, namely, even-line…

Materials Science · Physics 2014-05-20 Sharma SRKC Yamijala , Swapan K Pati

Superconducting boron doped silicon is a promising material for integrated silicon quantum devices. In particular, its low electronic density and moderate disorder make it a suitable candidate for the fabrication of large inductances with…

Superconductivity · Physics 2021-06-25 P. Bonnet , F. Chiodi , D. Flanigan , R. Delagrange , N. Brochu , D. Débarre , H. le Sueur

Half-metals are a class of materials that are metallic only for one spin direction, and are essential for spintronics applications where one needs to read, write, store and transfer spin-data. This spin sensitivity appears to restrict them…

We present the findings of the superconductivity in the silicon nanostructures prepared by short time diffusion of boron after preliminary oxidation of the n-type Si (100) surface. These Si-based nanostructures represent the p-type high…

Superconductivity · Physics 2015-05-13 N. T. Bagraev , W. Gehlhoff , L. E. Klyachkin , A. M. Malyarenko , V. V. Romanov

The effect of chemical doping on the ZSiNRs with Mn as passivating element replacing H atoms at one edge are investigated by first principles calculations.The structures optimized in the typical ferromagnetic and antiferromagnetic coupling…

Materials Science · Physics 2016-02-01 Changpeng Chen , Ziqing Zhu , Dace Zha , Meilan Qi , Jinping Wu

Short dangling bond wires (DB wires), fabricated on H-terminated Si(001) surfaces, show patterns of displacement that depend on their length. We have performed density function calculations, with and without spin-polarisation, designed to…

Materials Science · Physics 2009-11-10 C. F. Bird , D. R. Bowler

Oxide semimetals exhibiting both nontrivial topological characteristics stand as exemplary parent compounds and multiple degrees of freedom, offering great promise for the realization of novel electronic states. In this study, we present…

We employ first-principles calculations based density-functional-theory (DFT) approach to study electronic properties of partially and fully edge-hydrogenated armchair boron-nitrogen-carbon (BNC) nanoribbons (ABNCNRs), with widths between…

Materials Science · Physics 2018-05-09 Naresh Alaal , Nikhil Medhekar , Alok Shukla

We present the findings of the superconductivity observed in the silicon nanostructures prepared by short time diffusion of boron on the n-type Si(100) surface. These Si-based nanostructures represent the p-type ultra-narrow self-assembled…

Superconductivity · Physics 2009-11-11 N. T. Bagraev , W. Gehlhoff , L. E. Klyachkin , A. M. Malyarenko , V. V. Romanov , S. A. Rykov

We propose a class of graphene nanoribbons showing strong intrinsic ferromagnetic behavior due to their asymmetry. Such ribbons are based on a zig-zag edged backbone surmounted by a periodic, triangular notched region of variable size. The…

For most practical applications in electronic devices, two-dimensional materials should be transferred onto semiconducting or insulating substrates, since they are usually generated on metallic substrates. However, the transfer often leads…

Materials Science · Physics 2019-07-24 Yan Qian , Erjun Kan , Kaiming Deng , Haiping Wu

Antiferromagnetic spintronics is an on-going growing field of research. Employing both standard density functional theory and the $GW$ approximation within the framework of the FLAPW method, we study the electronic and magnetic properties…

Materials Science · Physics 2017-02-23 M. Tas , E. Sasioglu , C. Friedrich , S. Blugel , I. Galanakis

We study the magnetic and superconducting proximity effects in a semiconducting nanowire (NW) attached to superconducting leads and a ferromagnetic insulator (FI). We show that a sizable equilibrium spin polarization arises in the NW due to…

Mesoscale and Nanoscale Physics · Physics 2020-05-13 X. P. Zhang , V. N. Golovach , F. Giazotto , F. S. Bergeret