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Ultrashort spin current pulses have a great potential of becoming the carriers of information in future ultrafast spintronics. They present the outstanding property of an extremely compressed time profile, which can allow for the building…

Materials Science · Physics 2018-03-28 Marco Battiato

A novel scheme for spin filters is proposed by studying the coherent transport of electrons through the quantum wires with lateral magnetic modulations. Unlike other schemes in the literature, the modulation in our scheme is much weaker…

Condensed Matter · Physics 2007-05-23 J. Zhou , Q. W. Shi , M. W. Wu

Altermagnetic (AM) materials have recently attracted significant interest due to the non-relativistic momentum-dependent spin splitting of their electronic band structure which may be useful for antiferromagnetic (AFM) spintronics. So far,…

Materials Science · Physics 2024-09-04 Kartik Samanta , Ding-Fu Shao , Evgeny Y. Tsymbal

Non-equilibrium spin-polarized transport properties of antiferromagnetic stanene nanoribbons are theoretically studied under the combining effect of a normal electric field and linearly polarized irradiation based on the tight-binding model…

Mesoscale and Nanoscale Physics · Physics 2022-10-13 Fatemeh Rahimi , Arash Phirouznia

Spin-polarized antiferromagnets have recently gained significant interest because they combine the advantages of both ferromagnets (spin polarization) and antiferromagnets (absence of net magnetization) for spintronics applications. In…

Materials Science · Physics 2024-08-29 Soho Shim , M. Mehraeen , Joseph Sklenar , Steven S. -L. Zhang , Axel Hoffmann , Nadya Mason

We demonstrate microwave manipulation of the spin states of electrically injected spin-polarized electrons in silicon. Although the silicon channel is bounded by ferromagnetic metal films, we show that moderate microwave power can be…

Mesoscale and Nanoscale Physics · Physics 2013-12-16 C. C. Lo , J. Li , I. Appelbaum , J. J. L. Morton

Spin-polarized transport is investigated in normal metal-superconductor (NS) junctions as a function of interface transmissivity as well as temperature when the density of states of a superconductor is Zeeman-split in response to an…

Mesoscale and Nanoscale Physics · Physics 2008-04-03 F. Giazotto , F. Taddei

The broken inversion symmetry at the surface of a metallic film (or, more generally, at the interface between a metallic film and a different metallic or insulating material) greatly amplifies the influence of the spin-orbit interaction on…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 I. V. Tokatly , E. E. Krasovskii , G. Vignale

We investigate the enhancement of spin polarization in a quantum wire in the presence of a constriction and a spin-orbit coupling segment. It is shown that the spin-filtering effect is significantly heightened in comparison with the…

Mesoscale and Nanoscale Physics · Physics 2008-10-07 Jun-Feng Liu , Zhi-Cheng Zhong , Lei Chen , Dingping Li , Chao Zhang , Zhongshui Ma

The conversion of spin information into electrical signals is indispensable for spintronic technologies. Spin-to-charge conversion in ferromagnetic tunnel contacts is well-described using linear (spin-)transport equations, provided that…

Mesoscale and Nanoscale Physics · Physics 2018-10-29 R. Jansen , A. Spiesser , H. Saito , Y. Fujita , S. Yamada , K. Hamaya , S. Yuasa

Spin-polarized quasiparticles can be easily created during spin-filtering through a ferromagnetic insulator (FI) in contact with a superconductor due to pair breaking effects at the interface. A combination FI-N-FI sandwiched between two…

Mesoscale and Nanoscale Physics · Physics 2017-07-27 P. K. Muduli

Electric-field control of spin-dependent properties has become one of the most attractive phenomena in modern materials research due the promise of new device functionalities. One of the paradigms in this approach is to electrically toggle…

Materials Science · Physics 2015-06-19 Xiaohui Liu , J. D. Burton , Evgeny Y. Tsymbal

We formulate a model of a semiconductor Quantum Dot laser with injection of spin-polarized electrons. As compared to higher-dimensionality structures, the Quantum-Dot-based active region is known to improve laser properties, including the…

Mesoscale and Nanoscale Physics · Physics 2010-09-03 Rafał Oszwałdowski , Christian Gøthgen , Igor Žutić

We study the proximity-induced superconducting correlations in a normal metal connected to a superconductor when the interface between them is spin-active and the normal metal is ballistic or diffusive. Remarkably, for any interface spin…

Superconductivity · Physics 2009-11-13 Jacob Linder , Takehito Yokoyama , Asle Sudbø , Matthias Eschrig

The occurrence of inhomogeneous spin-density distribution in multilayered ferromagnetic diluted magnetic semiconductor nanostructures leads to strong dependence of the spin-polarized transport properties on these systems. The spin-dependent…

The generation, manipulation and detection of spin-polarized electrons in nanostructures define the main challenges of spin-based electronics[1]. Amongst the different approaches for spin generation and manipulation, spin-orbit coupling,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Sergio O. Valenzuela , M. Tinkham

In this work, we study the conductance and the thermoelectric properties of a quantum dot embedded between two metallic leads with a side-coupled triple quantum dot molecule under a magnetic field. We focus on the spin polarization and…

Mesoscale and Nanoscale Physics · Physics 2017-10-16 J. P. Ramos-Andrade , F. J. Peña , A. González , O. Ávalos-Ovando , P. A. Orellana

The spin-selective electron reflection at a ferromagnetic-paramagnetic interface is investigated using Fe films on a W(110) substrate. Angle-resolved photoemission of the majority and minority Fermi surfaces of the Fe film is used to probe…

Other Condensed Matter · Physics 2007-05-23 J. Schaefer , M. Hoinkis , Eli Rotenberg , P. Blaha , R. Claessen

Boundary conditions for order parameters at an interface between ferromagnetic (FM) and two-sublattice antiferromagnetic (AFM) materials were obtained in the continuous medium approximation similarly to the approach which allows one to take…

Applied Physics · Physics 2020-03-10 Oksana Busel , Oksana Gorobets , Yuri Gorobets

Electronic excitations in a ferromagnet can trigger ultrafast spin dynamics with potential applications in a speed increase in magnetic recording. The project investigates ultrafast magnetization dynamics, which is driven in metallic layers…

Materials Science · Physics 2010-07-06 Adrian Glaubitz
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