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Controlling the spin transport at the single-molecule level, especially without the use of ferromagnetic contacts, becomes a focus of research in spintronics. Inspired by the progress on atomic-level molecular synthesis, through…

Atomic and Molecular Clusters · Physics 2022-11-17 Yan-Dong Guo , Xue Zhao , Hong-Ru Zhao , Li Yang , Li-Yan Lin , Yue Jiang , Dan Ma , Yu-Ting Chen , Xiao-Hong Yan

Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin-polarization of their electronic structure. However, most of the studies involving spin transport, have disregarded…

Mesoscale and Nanoscale Physics · Physics 2015-04-29 P. N. Abufager , R. Robles , N. Lorente

High spin polarization materials or spin filters are key components in spintronics, a niche subfield of electronics where carrier spins play a functional role. Carrier transmission through these materials is "spin selective" i.e. these…

Mesoscale and Nanoscale Physics · Physics 2016-06-28 Kazi M. Alam , Sandipan Pramanik

Controlling electronic transport through a single-molecule junction is crucial for molecular electronics or spintronics. In magnetic molecular devices, the spin degree-of-freedom can be used to this end since the magnetic properties of the…

We investigate the spin transport properties of molecules belonging to the acenes series by using density functional theory combined with the non-equilibrium Green's function approach to electronic transport. While short acenes are found to…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 R. Pilevarshahri , I. Rungger , T. Archer , S. Sanvito , N. Shahtahmasebi

Electronic transport through a single-molecule magnet Mn$_{12}$ in a two-terminal set up is calculated using the non-equilibrium Green's function method in conjunction with density-functional theory. A single-molecule magnet Mn$_{12}$ is…

Materials Science · Physics 2010-01-28 Salvador Barraza-Lopez , Kyungwha Park , Víctor García-Suárez , Jaime Ferrer

Generating efficient and highly spin-polarized currents through nanoscale junctions is essential in the field of nanoelectronics and spintronics. In this paper, using $ab$ $initio$ electron transport calculations, we predict highly…

Mesoscale and Nanoscale Physics · Physics 2019-05-30 Dongzhe Li

A WSe$_2$ monolayer shows many interesting properties due to its spin-orbit coupling induced spin splitting in bands around the Fermi level and the spin-valley configuration. The orientation of the spin polarization in the relevant bands is…

Materials Science · Physics 2022-11-02 Hong Tang , Santosh Neupane , Li Yin , Jason M. Breslin , Adrienn Ruzsinszky

Spin-dependent transport through an endohedral fullerene Co@C$_{60}$ dimer with gold electrodes is explored theoretically using density functional and extended H\"{u}ckel theory. Density of states spin polarizations up to 95%, due to…

Mesoscale and Nanoscale Physics · Physics 2013-05-01 Alireza Saffarzadeh , George Kirczenow

We present a theoretical study of spin-dependent transport through molecular wires bridging ferromagnetic metal nanocontacts. We extend to magnetic systems a recently proposed model that provides a em quantitative explanation of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Eldon Emberly , George Kirczenow

Obtaining highly spin-polarized currents in molecular junctions is crucial and desirable for nanoscale spintronics devices. Motivated by our recent symmetry-based theoretical argument for complete blocking of one spin conductance channel in…

Mesoscale and Nanoscale Physics · Physics 2019-06-12 Dongzhe Li , Yannick J. Dappe , Alexander Smogunov

We investigate theoretically the prospects for using a magnetic nanoelectromechanical single-electron tunneling (NEM-SET) device as an electronic spin filter. We find that strong magnetic exchange forces on the net spin of the mobile…

Mesoscale and Nanoscale Physics · Physics 2012-09-25 Robert I. Shekhter , Artem Pulkin , Mats Jonson

The observation of spin-dependent transport through organic chiral structures has sparked numerous fundamental and applicative questions ranging from biology to spintronics. By now, there is a broad consensus that the effect results from…

Mesoscale and Nanoscale Physics · Physics 2022-01-12 Lior Oppenheim , Karen Michaeli

High degree of electron spin polarization is of crucial importance in operation of spintronic devices. We study the propagation of spin-polarized electrons through a boundary between two n-type semiconductor regions with different doping…

Mesoscale and Nanoscale Physics · Physics 2010-09-22 Yuriy V. Pershin , Vladimir Privman

We report on spin transport along double-helical molecular systems by considering various contact configurations and asymmetries between the two helical strands in the regime of completely coherent charge transport. Our results reveal that…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Ai-Min Guo , E. Díaz , C. Gaul , R. Gutierrez , F. Domínguez-Adame , G. Cuniberti , Qing-feng Sun

Whereas spintronics brings the spin degree of freedom to electronic devices, molecular/organic electronics adds the opportunity to play with the chemical versatility. Here we show how, as a contender to commonly used inorganic materials,…

Control and manipulation of electric current and, especially, its degree of spin polarization (spin filtering) across single molecules are currently of great interest in the field of molecular spintronics. We explore one possible strategy…

Mesoscale and Nanoscale Physics · Physics 2019-08-20 Dongzhe Li , Rajdeep Banerjee , Sourav Mondal , Ivan Maliyov , Mariya Romanova , Yannick J. Dappe , Alexander Smogunov

Chiral molecular junctions offer a promising platform for realizing chiral-induced spin selectivity (CISS), where spin filtering occurs without external magnetic fields. Here, we investigate spin transport in such junctions by combining…

Mesoscale and Nanoscale Physics · Physics 2025-09-19 Yu Wang , Ruihao Bi , Wei Liu , Jiayue Han , Wenjie Dou

Spin filtering is an essential operation in spintronics that allows creation and detection of spin polarized carriers. Transition metal ferromagnets are used as spin filters in most cases, though their spin filtering efficiency is only…

Mesoscale and Nanoscale Physics · Physics 2017-10-27 K. M. Alam , Sandipan Pramanik

Carbon-based molecular semiconductors are explored for application in spintronics because their small spin-orbit coupling promises long spin life times. We calculate the electronic transport from first principles through spin valves…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 Deniz Çakır , Diana M. Otálvaro , Geert Brocks
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