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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

The generation of an out-of-equilibrium population of spin-polarized carriers is a keystone process for quantum technologies and spintronics alike. It can be achieved through the so-called optical spin orientation by exciting the material…

We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case we argue that, at a certain constellation of system…

Mesoscale and Nanoscale Physics · Physics 2010-03-18 J. P. Dahlhaus , S. Maier , A. Komnik

Heat generated by spin currents in spintronics-based devices is typically much less than that generated by charge current flows in conventional electronic devices. However, the conventional approaches for excitation of spin currents based…

In this paper we review the recent field of organic spintronics, where organic materials are applied as a medium to transport and control spin-polarized signals. The contacts for injecting and detecting spins are formed by metals, oxides,…

Mesoscale and Nanoscale Physics · Physics 2007-06-13 W. J. M. Naber , S. Faez , W. G. van der Wiel

Topological insulators are characterized by Dirac cone surface states with electron spins aligned in the surface plane and perpendicular to their momenta. Recent theoretical and experimental work implied that this specific spin texture…

Spin valves based on materials in which the spin-flip is suppressed by the spatial separation of charge carriers, while maintaining electric neutrality in the valve volume, are considered. The possibility of using these valves as electric…

Mesoscale and Nanoscale Physics · Physics 2020-08-17 L. A. Pastur , V. V. Slavin , A. V. Yanovsky

A key notion defining the progress of the emergent fields of modern electronics, renewable energy, and smart systems is charge storage, which is primarily embodied in various battery chemistries and systems. In addition to the charge…

Here we propose a mechanism by which spin polarization can be generated dynamically in chiral molecular systems undergoing photo-induced electron transfer. The proposed mechanism explains how spin polarization emerges in systems where…

Mesoscale and Nanoscale Physics · Physics 2021-08-19 Thomas P. Fay , David T. Limmer

Circular polarized photocurrent is observed near the electrodes on a few-layer ReS2sample at room temperature. For both electrodes, the spatial distribution of the circular polarized photocurrent shows a feature of two wings, with one…

Applied Physics · Physics 2019-11-20 Yang Zhang , Yu Wang , Yu Liu , Xiao-Lin Zeng , Jing Wu , Jin ling Yu , Tian-Jun Cao , Shi-Jun Liang , Yong-Hai Chen

In spin-polarized bipolar transport both electrons and holes in doped semiconductors contribute to spin-charge coupling. The current conversion between the minority (as referred to carriers and not spin) and majority carriers leads to novel…

Condensed Matter · Physics 2007-05-23 S. Das Sarma , Jaroslav Fabian , Igor Zutic

There is a renewed interest to study spin-polarized transport and spin dynamics in various electronic materials. The motivation to examine the spin degrees of freedom (mostly in electrons, but also in holes and nuclei) comes from various…

Condensed Matter · Physics 2007-05-23 Igor Zutic

The generation of time-reversal-odd spin-current in metallic altermagnets has attracted considerable interest in spintronics. However, producing pure spin-current in insulating materials remains both challenging and desirable, as insulating…

Materials Science · Physics 2026-05-21 Ruizhi Dong , Ranquan Cao , Dian Tan , Ruixiang Fei

The ultimate goal of spintronics is achieving electrically controlled coherent manipulation of the electron spin at room temperature to enable devices such as spin field-effect transistors. With conventional materials, coherent spin…

Mesoscale and Nanoscale Physics · Physics 2024-11-01 Josep Ingla-Aynés , Franz Herling , Jaroslav Fabian , Luis E. Hueso , Fèlix Casanova

The quest for a spin-polarized organic light emitting diode (spin-OLED) is a common goal in the emerging fields of molecular electronics and spintronics. In this device two ferromagnetic electrodes are used to enhance the…

Mesoscale and Nanoscale Physics · Physics 2019-04-15 J. P. Prieto-Ruiz , S. G. Miralles , H. Prima-García , A. Løpez-Munoz , A. Riminucci , P. Graziosi , M. Cinchetti , V. A. Dediu , E. Coronado

Magnetically ordered, electrically insulating materials pave the way towards novel spintronic devices. In these materials the flow of magnetic excitations such as magnons results in pure spin currents. These spin currents can be driven by…

Applied Physics · Physics 2017-12-25 Matthias Althammer , Sebastian T. B. Goennenwein , Rudolf Gross

Storing, transmitting, and manipulating information using the electron spin resides at the heart of spintronics. Fundamental for future spintronics applications is the ability to control spin currents in solid state systems. Among the…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Fabrizio Nichele , Szymon Hennel , Patrick Pietsch , Werner Wegscheider , Peter Stano , Philippe Jacquod , Thomas Ihn , Klaus Ensslin

Spin caloritronics is the science and technology to control spin, charge, and heat currents in magnetic nanostructures. The spin degree of freedom provides new strategies for thermolelectric power generation that have not yet been fully…

Mesoscale and Nanoscale Physics · Physics 2015-10-09 Adam B. Cahaya , Oleg A. Tretiakov , G. E. W. Bauer

Spintronics is expected as the next-generation technology based on the novel notch of spin degree of freedom of electrons. Half metals, a class of materials which behave as a metal in one spin direction and an insulator in the opposite spin…

Materials Science · Physics 2011-08-19 Xiao HU

We optically generate electron spins in semiconductors and apply an external magnetic field perpendicularly to them. Time-resolved photoluminescence measurements, pumped with a circularly polarized light, are performed to study the spin…

Applied Physics · Physics 2018-05-02 M. Idrish Miah