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We measured spin transport in nonferromagnetic (NM) metallic multilayers from the contribution to damping due to spin pumping from a ferromagnetic Co90Fe10 thin film. The multilayer stack consisted of NM1/NM2/Co90Fe10(2 nm)/NM2/NM3 with…

Mesoscale and Nanoscale Physics · Physics 2013-05-23 C. T. Boone , H. T. Nembach , J. M. Shaw , T. J. Silva

One of the important issues of molecular spintronics is the control and manipulation of charge transport and, in particular, its spin polarization through single-molecule junctions. Using $ab$ $initio$ calculations, we explore…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 Dongzhe Li , Yannick J. Dappe , Alexander Smogunov

In this study, we employed the non-equilibrium Green's function method combined with density functional theory to investigate the spin transport properties of the actinide sandwich phthalocyanine molecule U(Pc)2.This study aims to provide…

Computational Physics · Physics 2025-03-03 Lu Xu , Ding Wang , Xiaobo Yuan , Dongfa Lan , Yu Zhu , Xiaobo Li , Weiyu Xie

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

Nitrogen-doped carbon nanotubes can provide reactive sites on the porphyrin-like defects. It's well known that many porphyrins have transition metal atoms, and we have explored transition metal atoms bonded to those porphyrin-like defects…

Materials Science · Physics 2015-05-27 J. M. de Almeida , A. R. Rocha , A. J. R. da Silva , A. Fazzio

In this paper, we introduce a new kind of spin switch based on a joint system of copper phthalocyanine (CuPc) and C59N. Using density functional theory, we investigate the total magnetic moment of this system when gradually changing the…

Materials Science · Physics 2017-07-25 Min Wang , Yan Zhou , Sui Kong Hark , Xi Zhu

Coherent electronic transport through a molecular device is studied using non-equilibrium Green's function (NEGF) formalism. Such device is made of a carbon nanowire which is connected to ferromagnetic electrodes. The molecule itself is…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Kamil Walczak , Gloria Platero

We studied spin transport in four organic semiconductors (OSCs) with different electronic properties, with Fe and Co as the top and bottom ferromagnetic (FM) contacts, respectively. Magnetoresistance (MR) effects were observed up to room…

Materials Science · Physics 2012-05-14 Yaohua Liu , Taegweon Lee , Howard E. Katz , Daniel H. Reich

The magnetic tetrapyrrole molecules (such as porphyrins and phthalocyanines) with an active transition metal atom in their centre are currently intensively studied as prosperous potential elements of devices for high-density information…

Materials Science · Physics 2022-10-06 Aleksei Koshevarnikov , Tomi Ketolainen , Jacek A. Majewski

An ab initio Green's function study of the electron transport properties of the selected metal-porphyrin complexes has been performed. Transmission spectra and current-voltage dependence have been calculated for the porphyrin molecule…

Materials Science · Physics 2007-09-19 Ilya Yanov , Juan Jose Palacios , Glake Hill

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

Molecular spin systems are promising candidates for quantum information processing and nanoscale sensing, yet their characterization at room temperature remains challenging due to fast spin decoherence. In this work, we use $T_1$…

Quantum Physics · Physics 2025-11-06 Boning Li , Xufan Li , Yifan Quan , Avetik R Harutyunyan , Paola Cappellaro

We report an \emph{ab inito} investigation on the ground-state atomic configuration, electronic structures, magnetic and spin-dependent transport properties of Mn-doped Au$_{25}$ nanoclusters protected by thiolate. It is found that the most…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Miao Zhou , Yongqin Cai , Minggang Zeng , Chun Zhang , Yuan Ping Feng

Edge-functionalized Transition Metal dichalcogenide nanoribbons of the zigzag type (zTMDCNRs) are explored in terms of their spin transmission properties. Specifically, systems of the type 5-zWXYNR + nA (X, Y = S, Se; n = 0, 1, 2; A = H, B,…

Mesoscale and Nanoscale Physics · Physics 2025-10-22 Joshua O. Aggrey , Leonard Bleiziffer , Frank Hagelberg

An analog of the optical polarizer/analyzer for electrons, a spin filter based on freestanding ferromagnetic (FM) nanomembrane covering the entrance of the microchannel plate (MCP) was applied for efficient spin filtering and electron…

We demonstrate that due to their spin-orbit interaction carbon nanotube cross-junctions have attractive spin projective properties for transport. First, we show that the junction can be used as a versatile spin filter as a function of a…

Mesoscale and Nanoscale Physics · Physics 2013-11-12 Francesco Mazza , Bernd Braunecker , Patrik Recher , Alfredo Levy Yeyati

We report on a theoretical study of magnetic transitions induced by tunnelling electrons in individual adsorbed M-Phthalocyanine (M-Pc) molecules where M is a metal atom: Fe-Pc on a Cu(110)(2$\times$1)-O surface and Co-Pc layers on Pb(111)…

Mesoscale and Nanoscale Physics · Physics 2010-07-02 Jean-Pierre Gauyacq , Frederico D. Novaes , Nicolás Lorente

We design spin filters for particles with potentially arbitrary spin S (= 1/2, 1, 3/2,....) using a one-dimensional periodic chain of magnetic atoms as a quantum device. Describing the system within a tight-binding formalism we present an…

Mesoscale and Nanoscale Physics · Physics 2016-08-02 Biplab Pal , Rudolf A. Römer , Arunava Chakrabarti

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

Novel imaging spin-filter techniques, which are based on low energy electron diffraction, are currently of high scientific interest. To improve the spin-detection efficiency a variety of new materials have been introduced in recent years. A…

Computational Physics · Physics 2015-11-18 Stephan Borek , Jürgen Braun , Hubert Ebert , Ján Minár