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Creating, manipulating and detecting spin polarized carriers are the key elements of spin based electronics. Most practical devices use a perpendicular geometry in which the spin currents, describing the transport of spin angular momentum,…

Mesoscale and Nanoscale Physics · Physics 2012-01-17 Abraham Slachter , Frank Lennart Bakker , Jean-Paul Adam , Bart Jan van Wees

There has been considerable interest in spin-orbit torques for the purpose of manipulating the magnetization of ferromagnetic (FM) films or nano-elements for spintronic technologies. Spin-orbit torques are derived from spin currents created…

Materials Science · Physics 2016-02-02 Weifeng Zhang , Wei Han , See-hun Yang , Yan Sun , Yang Zhang , Binghai Yan , Stuart S. P. Parkin

Using the THz emission spectroscopy, we investigate ultrafast spin-to-charge current conversion in epitaxial thin films of the altermagnetic candidate RuO$_2$. We perform a quantitative analysis of competing effects that can contribute to…

We report on efficient spin injection in p-doped InGaAs/GaAs quantum-dot (QD) spin light emitting diode (spin-LED) under zero applied magnetic field. A high degree of electroluminescence circular polarization (Pc) ~19% is measured in…

We study vortex pattern formation in thin ferromagnetic films under the action of strong spin-polarized currents. Considering the currents which are polarized along the normal of the film plane, we determine the critical current above which…

Strongly Correlated Electrons · Physics 2013-05-30 Yuri Gaididei , Oleksii M. Volkov , Volodymyr P. Kravchuk , Denis D. Sheka

We study the magnetoresistance of yttrium iron garnet/Pt heterostructures in which the Pt layer was grown via atomic layer deposition (ALD). Magnetotransport experiments in three orthogonal rotation planes reveal the hallmark features of…

The spin-Hall effect underpins some of the most active topics in modern physics, including spin torques and the inverse spin-Hall effect, yet it lacks a proper theoretical description. This makes it difficult to differentiate the SHE from…

Mesoscale and Nanoscale Physics · Physics 2025-01-30 Hongyang Ma , James H. Cullen , Serajum Monir , Rajib Rahman , Dimitrie Culcer

We theoretically study spin and charge transport induced by a twisted light beam irradiated on a disordered surface of a doped three dimensional topological insulator (TI). We find that various types of spin vortices are imprinted on the…

Mesoscale and Nanoscale Physics · Physics 2016-05-17 Kunitaka Shintani , Katsuhisa Taguchi , Yukio Tanaka , Yuki Kawaguchi

Pure spin currents, i.e. the transport of angular momentum without an accompanying charge current, represent a new, promising avenue in modern spintronics from both a fundamental and an application point of view. Such pure spin currents can…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 Matthias Althammer

Spin currents can be generated on an ultrafast timescale by excitation of a ferromagnetic (FM) thin film with a femtosecond laser-pulse. Recently, it has been demonstrated that these ultrafast spin currents can transport angular momentum to…

Mesoscale and Nanoscale Physics · Physics 2017-07-19 Mark L. M. Lalieu , Paul L. J. Helgers , Bert Koopmans

We propose and investigate a spin-cell device which provides the necessary spin-motive force to drive a spin current for future spintronic circuits. Our spin-cell have four basic characteristics: (i) it has two poles so that a spin current…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Qing-feng Sun , Hong Guo , Jian Wang

Density of the polyacrylamide ultrathin films has been studied using X-ray reflectivity technique. Two sources (one powder and another aqueous solution) of polyacrylamide were used to prepare spin coated films on silicon substrate. Light…

Soft Condensed Matter · Physics 2009-04-14 Mojammel H. Mondal , M. Mukherjee , K. Kawashima , K. Nishida , T. Kanaya

We electrically detect charge current induced spin polarization on the surface of molecular beam epitaxy grown Bi$_2$Te$_3$ thin film in a two-terminal device with a ferromagnetic MgO/Fe and a nonmagnetic Ti/Au contact. The two-point…

Mesoscale and Nanoscale Physics · Physics 2017-04-10 Rik Dey , Anupam Roy , Tanmoy Pramanik , Amritesh Rai , Seung Heon Shin , Sarmita Majumder , Leonard F. Register , Sanjay K. Banerjee

Centrosymmetric materials with site inversion asymmetries possess hidden spin polarization, which remains challenging to be converted into spin currents because the global inversion symmetry is still conserved. This study demonstrates the…

Materials Science · Physics 2024-05-21 Kexin Wang , Butian Zhang , Chengyu Yan , Luojun Du , Shun Wang

The spin Hall effect (SHE) converts charge current to pure spin currents in orthogonal directions in materials that have significant spin-orbit coupling.The efficiency of the conversion is described by the spin Hall Angle (SHA). The SHA can…

Mesoscale and Nanoscale Physics · Physics 2015-07-28 Weifeng Zhang , Wei Han , Xin Jiang , See-Hun Yang , Stuart S. P. Parkin

A pure spin current is predicted to occur when an external magnetic field and a linearly inhomogeneous spin-only field are appropriately aligned. Under these conditions (such as originate from nuclear contact hyperfine fields that do not…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Nicholas J. Harmon , Michael E. Flatté

We predict the very large spin Hall effect in type-II superconductors which mechanism is drastically different from the previously known ones. We find that in the flux-flow regime the spin is transported by the spin-polarized Abrikosov…

Superconductivity · Physics 2019-04-12 Artjom Vargunin , Mikhail Silaev

In spintronics, both electronic charge and spin are used to process and store information. Generation, manipulation, and detection of spin currents are essential for the development of next-generation spintronic technologies. Here, we…

Mesoscale and Nanoscale Physics · Physics 2026-05-15 Diego B. Fonseca , Luiz Felipe C. Pereira , Anderson L. R. Barbosa

We characterize spin wave propagation and its modification by an electrical current in Permalloy(Py)/Pt bilayers with Py thickness between 4 and 20 nm. First, we analyze the frequency non-reciprocity of surface spin waves and extract from…

Materials Science · Physics 2020-01-15 O. Gladii , M. Collet , Y. Henry , J. -V. Kim , A. Anane , M. Bailleul

Transparent conductive indium tin oxide (ITO) thin films, electrochemically intercalated with sodium or other cations, show tunable superconducting transitions with a maximum $T_c$ at 5 K. The transition temperature and the density of…

Superconductivity · Physics 2013-02-07 Ali E. Aliev , Ka Xiong , Kyeongjae Cho , M. B. Salamon
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