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In this article we review recent work on van der Waals (vdW) systems in which at least one of the components has strong spin-orbit coupling. We focus on a selection of vdW heterostructures to exemplify the type of interesting electronic…

Mesoscale and Nanoscale Physics · Physics 2020-06-04 Enrico Rossi , Christopher Triola

Quantum spins, referred to the spin operator preserved by full SU(2) symmetry in the absence of the magnetic anistropy, have been proposed to host exotic interactions with superconductivity4. However, spin orbit coupling and crystal field…

Achieving control over the electron spin in quantum dots (artificial atoms) or real atoms promises access to new technologies in conventional and in quantum information processing. Here we review our proposal for quantum computing with…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Vitaly N. Golovach , Daniel Loss

We calculate the spin-dependent zero-bias conductance $G_{\sigma\sigma'}$ in armchair graphene nanoribbons with hydrogen adsorbates employing a DFT-based ab initio transport formalism including spin-orbit interaction. We find that the…

Mesoscale and Nanoscale Physics · Physics 2015-07-07 Jan Wilhelm , Michael Walz , Ferdinand Evers

In spin-polarized itinerant electron systems, collective spin-wave modes arise from dynamical exchange and correlation (xc) effects. We here consider spin waves in doped paramagnetic graphene with adjustable Zeeman-type band splitting. The…

Mesoscale and Nanoscale Physics · Physics 2022-01-05 Matthew J. Anderson , Florent Perez , Carsten A. Ullrich

Spintronics involves the study of active control and manipulation of spin degrees of freedom in solid-state systems. The fascinating spin-resolved properties of graphene motivate numerous researchers into the studies of spintronics in…

Materials Science · Physics 2015-06-03 Yangyang Wang , Ruge Quhe , Dapeng Yu , Ju Li , Jing Lu

Due to the weak spin-orbit interaction and the peculiar relativistic dispersion in graphene, there are exciting proposals to build spin qubits in graphene nanoribbons with armchair boundaries. However, the mutual interactions between…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Hsiu-Hau Lin , Toshiya Hikihara , Horng-Tay Jeng , Bor-Luen Huang , Chung-Yu Mou , Xiao Hu

We report a systematic study on strong enhancement of spin-orbit interaction (SOI) in graphene driven by transition-metal dichalcogenides (TMDs). Low temperature magnetotoransport measurements of graphene proximitized to different TMDs…

Mesoscale and Nanoscale Physics · Physics 2019-06-12 T. Wakamura , F. Reale , P. Palczynski , M. Q. Zhao , A. T. C. Johnson , S. Guéron , C. Mattevi , A. Ouerghi , H. Bouchiat

We present a new mechanism for dissipationless persistent charge current. Two dimensional topological insulators hold dissipationless spin currents in their edges so that, for a given spin orientation, a net charge current flows which is…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 D. Soriano , J. Fernández-Rossier

We investigate bilayers of nanoporous graphene (NPG), laterally bonded carbon nanoribbons, and graphene. The electronic and transport properties are explored as a function of the interlayer twist angle using an atomistic tight-binding model…

Mesoscale and Nanoscale Physics · Physics 2024-08-12 Xabier Diaz de Cerio , Aleksander Bach Lorentzen , Mads Brandbyge , Aran Garcia-Lekue

We theoretically investigate the one-color injection currents and shift currents in zigzag graphene nanoribbons with applying a static electric field across the ribbon, which breaks the inversion symmetry to generate nonzero second order…

Mesoscale and Nanoscale Physics · Physics 2021-09-08 Yadong Wei , Weiqi Li , Yongyuan Jiang , Jinluo Cheng

We investigate hyperfine induced electron spin and entanglement dynamics in a system of two quantum dot spin qubits. We focus on the situation of zero external magnetic field and concentrate on approximation-free theoretical methods. We…

Mesoscale and Nanoscale Physics · Physics 2010-07-02 Bjoern Erbe , John Schliemann

Proximity effects are one of the pillars of exotic phenomena and technological applications of two dimensional materials. However, the interactions nature depends strongly on the materials involved, their crystalline symmetries, and…

Mesoscale and Nanoscale Physics · Physics 2022-01-11 Armando Pezo , Zeila Zanolli , Nils Wittemeier , Pablo Ordejon , Adalberto Fazzio , Stephan Roche , Jose H. Garcia

The development of a spintronics device relies on efficient generation of spin polarized currents and their electric field controlled manipulation. While observation of exceptionally long spin relaxation lengths make graphene an intriguing…

We investigate spin-dependent thermoelectric transport through a system of two coupled quantum dots attached to reservoirs of spin-polarized electrons. Generally, we focus on the strongly correlated regime of transport. To this end, a…

Mesoscale and Nanoscale Physics · Physics 2017-02-20 Łukasz Karwacki , Piotr Trocha

Van der Waals heterostructures provide a versatile platform for tailoring electronic properties through the integration of two-dimensional materials. Among these combinations, the interaction between bilayer graphene and transition metal…

Mesoscale and Nanoscale Physics · Physics 2024-10-30 M. Masseroni , M. Gull , A. Panigrahi , N. Jacobsen , F. Fischer , C. Tong , J. D. Gerber , M. Niese , T. Taniguchi , K. Watanabe , L. Levitov , T. Ihn , K. Ensslin , H. Duprez

It has recently been shown that electronic transport in zigzag graphene nanoribbons becomes spin-polarized upon application of an electric field across the nanoribbon width. However, the electric fields required to experimentally induce…

Materials Science · Physics 2012-02-06 Bryan M. Wong , Simon H. Ye , Greg O'Bryan

The abilities to inject and detect spin carriers are fundamental for research on transport and manipulation of spin information. Pure electronic spin currents have been recently studied in nanoscale electronic devices using a non-local…

Mesoscale and Nanoscale Physics · Physics 2012-09-25 I. J. Vera-Marun , V. Ranjan , B. J. van Wees

Intrinsic and Rashba spin-orbit interactions in strained graphene is studied within the tight-binding (TB) approach. Dependence of Slater-Koster (SK) parameters of graphene on strain are extracted by fitting the \emph{ab initio} band…

Mesoscale and Nanoscale Physics · Physics 2019-02-08 H. Rezaei , A. Phirouznia

Graphene nanoribbons (GNRs), low-dimensional platforms for carbon-based electronics, show the promising perspective to also incorporate spin polarization in their conjugated electron system. However, magnetism in GNRs is generally…