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Half-metallic ferromagnets can produce fully spin-polarized conduction electrons and can be applied to fabricate spintronic devices. Thus, in this study, the electronic structure, magnetic properties, and optical properties of GaSb, which…

Materials Science · Physics 2020-01-07 Chuang Wang , Wenhui Wan , Yanfeng Ge , Yong-Hong Zhao , Kaicheng Zhang , Yong Liu

We investigated the emergence of spin spiral ground state induced by the electric field in the bilayer zigzag graphene nanoribbons for the ferromagnetic edge states. To do that, we employed the generalized Bloch theorem to create flat…

Mesoscale and Nanoscale Physics · Physics 2021-02-15 Teguh Budi Prayitno

Electronic transport with a line (or a few lines) of Anderson type disorder in a zigzag graphene nanoribbon is investigated in presence of Rashba spin-orbit interaction. Such line disorders give rise to peculiar behavior in both charge as…

Mesoscale and Nanoscale Physics · Physics 2019-01-01 Sudin Ganguly , Saurabh Basu , Santanu K. Maiti

We investigate spin transport in diffusive graphene nanoribbons with both clean and rough zigzag edges, and long-range potential fluctuations. The long-range fields along the ribbon edges cause the local doping to come close to the charge…

Mesoscale and Nanoscale Physics · Physics 2014-03-31 Jan Bundesmann , Ming-Hao Liu , Inanc Adagideli , Klaus Richter

Hexagonal boron nitride (h-BN) hosts pure single-photon emitters that have shown evidence of optically detected electronic spin dynamics. However, the electrical and chemical structure of these optically addressable spins is unknown, and…

We study the nonequilibrium steady state of a mechanical resonator in the quantum regime realized by a suspended carbon nanotube quantum dot contacted by two ferromagnets. Because of the spin-orbit interaction and/or an external magnetic…

Mesoscale and Nanoscale Physics · Physics 2014-07-24 Pascal Stadler , Wolfgang Belzig , Gianluca Rastelli

We suggest a new spin orientation mechanism for localized electrons: $dynamic~electron~spin~polarization~provided~by~nuclear~spin~fluctuations$. The angular momentum for the electrons is gained from the nuclear spin system via the hyperfine…

Mesoscale and Nanoscale Physics · Physics 2020-10-14 D. S. Smirnov , T. S. Shamirzaev , D. R. Yakovlev , M. Bayer

The spin-dependent electronic structures of aluminum-(Al) doped zigzag silicene nanoribbons (ZSiNRs) are investigated by first-principles calculations. When ZSiNRs are substitutionally doped by a single Al atom on different sites in every…

Materials Science · Physics 2014-09-01 Y. J. Dong , X. F. Wang , P. Vasilopoulos , M. X. Zhai , X. M. Wu

In the context of characterizing nitrogen poor carbo-nitrides for different applications, identification of an unusual onset of spin polarization of N(p) states has been shown. A full saturation up to 3 Bohr magnetons is demonstrated in…

Computational Physics · Physics 2019-08-27 Samir F Matar

We investigated spin-resolved electronic transport through a junction composed of a nonmagnetic metal electrode and a zigzag carbon nanotube by means of self-consistent Green's function method in the tight binding approximation and the…

Mesoscale and Nanoscale Physics · Physics 2007-09-12 Zhan-Feng Jiang , Jian Li , Shun-Qing Shen , W. M. Liu

Electronic states at the ends of a narrow armchair nanoribbon give rise to a pair of non-locally entangled spins. We propose two experiments to probe these magnetic states, based on magnetometry and tunneling spectroscopy, in which…

Mesoscale and Nanoscale Physics · Physics 2013-08-23 Michael Golor , Cornelie Koop , Thomas C. Lang , Stefan Wessel , Manuel J. Schmidt

We present a new type of a thermodynamically stable magnetic state at interfaces and surfaces of chiral magnets. The state is a soliton solution of micromagnetic equations localized in all three dimensions near a boundary and contains a…

Strongly Correlated Electrons · Physics 2015-09-22 F. N. Rybakov , A. B. Borisov , S. Blügel , N. S. Kiselev

Realizing magnetism in graphene/carbon nanostructures is a decade-long challenge. The magnetic edge state and half metallicity in zigzag graphene nanoribbons are particularly promising [Y.-W. Son, et al., Nature 444, 347 (2006)]. However,…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Shiyuan Gao , Li Yang

We prove theoretically the possibility of electric-field controlled polaron formation involving flexural (bending) modes in suspended carbon nanotubes. Upon increasing the field, the ground state of the system with a single extra electron…

Mesoscale and Nanoscale Physics · Physics 2013-02-25 I. Snyman , Yu. V. Nazarov

Graphene nanoribbons (GNRs) possess distinct symmetry-protected topological phases. We show, through first-principles calculations, that by applying an experimentally accessible transverse electric field (TEF), certain boron and nitrogen…

Mesoscale and Nanoscale Physics · Physics 2021-10-25 Fangzhou Zhao , Ting Cao , Steven G. Louie

Using a multi-orbital tight-binding model, we have studied the edge states of zigzag silicene, germanene, and stanene nanoribbons (ZSiNRs, ZGeNRs and ZSnNRs, respectively) in the presence of the Coulomb interaction and a vertical electric…

Mesoscale and Nanoscale Physics · Physics 2019-02-20 Ayami Hattori , Keiji Yada , Masaaki Araidai , Masatoshi Sato , Kenji Shiraishi , Yukio Tanaka

We propose a new type of edges, arising due to the anisotropy inherent in the puckered structure of a honeycomb system such as in phosphorene. Skewed-zigzag and skewed-armchair nanoribbons are semiconducting and metallic, respectively, in…

Mesoscale and Nanoscale Physics · Physics 2016-06-29 Marko M. Grujić , Motohiko Ezawa , Milan Ž. Tadić , Françios M. Peeters

Lateral heterostructures of two-dimensional materials may exhibit various intriguing emergent properties. Yet when specified to the orientationally aligned heterojunctions of zigzag graphene and hexagonal boron nitride (hBN) nanoribbons,…

Mesoscale and Nanoscale Physics · Physics 2015-09-22 Jiang Zeng , Wei Chen , Ping Cui , Dong-Bo Zhang , Zhenyu Zhang

We report thermodynamic magnetization measurements of two-dimensional electrons in several high mobility Si metal-oxide-semiconductor field-effect transistors. We provide evidence for an easily polarizable electron state in a wide density…

Strongly Correlated Electrons · Physics 2012-11-29 N. Teneh , A. Yu. Kuntsevich , V. M. Pudalov , M. Reznikov

We present an ab initio study of the structural, electronic, and quantum transport properties of B-N-complex edge-doped graphene nanoribbons (GNRs). We find that the B-N edge codop-ing is energetically a very favorable process and…

Mesoscale and Nanoscale Physics · Physics 2015-03-10 Seong Sik Kim , Han Seul Kim , Hyo Seok Kim , Yong-Hoon Kim
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