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We propose and analyze surface-plasmon-driven electron spin currents in a thin metallic film. The electron gas in the metal follows the transversally rotating electric fields of the surface plasmons (SPs), which leads to a static…

Mesoscale and Nanoscale Physics · Physics 2020-04-21 Daigo Oue , Mamoru Matsuo

We study spin transport in lateral spin valves with constricted channels. Using electromigration, we modulate the spin accumulation by continuously varying the width of the non-magnetic channel at a single location. By fitting the non-local…

Mesoscale and Nanoscale Physics · Physics 2016-08-10 Emmanouil Masourakis , Libe Arzubiaga , Goran Mihajlović , Estitxu Villamor , Roger Llopis , Fèlix Casanova , Luis E. Hueso

We theoretically study the transport properties of a supramolecular spin valve, consisting of a carbon nanotube with two attached magnetic molecules, weakly coupled to metallic contacts. The emphasis is put on analyzing the change of the…

Mesoscale and Nanoscale Physics · Physics 2019-03-19 A. Plominska , I. Weymann

In this work we outline the mechanisms contributing to the oxygen reduction reaction in nanostructured cathodes of La0.8Sr0.2MnO3 (LSM) for Solid Oxide Fuel Cells (SOFC). These cathodes, developed from LSM nanostructured tubes, can be used…

Giant magneto-Seebeck (GMS) effect was observed in Co/Cu/Co and NiFe/Cu/Co spin valves. Their Seebeck coefficients in parallel state was larger than that in antiparallel state, and GMS ratio defined as (SAP-SP)/SP could reach -9% in our…

Materials Science · Physics 2015-06-12 X. M. Zhang , C. H. Wan , Z. H. Yuan , H. Wu , Q. T. Zhang , X. Zhang , B. S. Tao , C. Fang , X. F. Han

The saturation of the magnetorotational (MRI) instability in thin Keplerian disks through three wave resonant interactions is introduced and discussed. That mechanism is a natural generalization of the fundamental decay instability…

Plasma Physics · Physics 2015-06-16 Yuri Shtemler , Edward Liverts , Michael Mond

Large positive (P) magnetoresistance (MR) has been observed in parallel magnetic fields in a single 2D layer in a delta-doped GaAs/AlGaAs heterostructure with a variable-range-hopping (VRH) mechanism of conductivity. Effect of large PMR is…

Disordered Systems and Neural Networks · Physics 2009-10-31 I. Shlimak , S. I. Khondaker , M. Pepper , D. A. Ritchie

We derive kinetic equations describing injection and transport of spin polarized carriers in organic semiconductors with hopping conductivity via an impurity level. The model predicts a strongly voltage dependent magnetoresistance, defined…

Mesoscale and Nanoscale Physics · Physics 2015-02-06 A. V. Shumilin , V. V. Kabanov , V. A. Dediu

Composite wires with a three-layered structure exhibit a large giant magneto-impedance (GMI) effect, which can be used in sensitive magnetic field sensors. To further investigate the origin of the GMI effect, composite wires consisting of a…

Materials Science · Physics 2013-07-02 Ralf Betzholz , Lingyan Shi , Haibin Gao , Zhenjie Zhao , Uwe Hartmann

We calculate the spin-polarized electronic transport through a molecular bilayer spin valve from first principles, and establish the link between the magnetoresistance and the spin-dependent inter- actions at the metal-molecule interfaces.…

Mesoscale and Nanoscale Physics · Physics 2016-03-26 Deniz Çakır , Diana M. Otálvaro , Geert Brocks

Spin-torque driven ferromagnetic resonance (ST-FMR) is used to study thin Co/Ni synthetic layers with perpendicular anisotropy confined in spin-valve based nanojunctions. Field swept ST-FMR measurements were conducted with a magnetic field…

Mesoscale and Nanoscale Physics · Physics 2008-01-07 W. Chen , J-M. L. Beaujour , G. de Loubens , A. D. Kent , J. Z. Sun

Colossal magnetoresistance (CMR) is highly applicable in spintronic devices such as magnetic sensors, magnetic memory, and hard drives. Typically, CMR is found in Weyl semimetals characterized by perfect electron-hole symmetry or…

Mesoscale and Nanoscale Physics · Physics 2023-11-28 Yiwen Zhang , Bo Xie , Yue Yang , Yueshen Wu , Xin Lu , Yuxiong Hu , Yifan Ding , Jiadian He , Peng Dong , Jinghui Wang , Xiang Zhou , Jianpeng Liu , Zhu-Jun Wang , Jun Li

The effects of magnetic dilution and applied pressure on frustrated spinel Ni$_{2-x}$Mg$_{x}$GeO$_{4}$ (0 $\leq x \leq 1.0$) are analyzed using specific heat, AC and DC magnetization and x-ray diffraction. The parent compound has two…

Materials Science · Physics 2015-11-11 J. T. Korobanik , K. Caslin , P. Reuvekamp , F. S. Razavi

Topological insulators are immensely investigated for their surface states related properties as these materials can be used for various spintronics, quantum computing, and optoelectronics applications. In this perspective, different…

Materials Science · Physics 2022-07-05 Yogesh Kumar , Prince Sharma , V. P. S. Awana

Recent theoretical studies have demonstrated the possibility to excite and sustain noncollinear magnetization states in ferromagnetic nanowires. The resulting state is referred to as a spin-density wave (SDW). SDWs can be interpreted as…

Mesoscale and Nanoscale Physics · Physics 2019-05-01 Patrick Sprenger , Mark A. Hoefer , Ezio Iacocca

Inertia effects in magnetization dynamics are theoretically shown to result in a different type of spin waves, i.e. nutation surface spin waves, which propagate at terahertz frequencies in in-plane magnetized ferromagnetic thin films.…

Mesoscale and Nanoscale Physics · Physics 2021-06-02 Mikhail Cherkasskii , Michael Farle , Anna Semisalova

Magnetotransport measurements are a popular way of characterizing the electronic structure of topological materials and often the resulting datasets cannot be described by the well-known Drude model due to large, non-parabolic…

Mesoscale and Nanoscale Physics · Physics 2019-10-23 J. C. de Boer , D. P. Leusink , A. Brinkman

Via the process of accretion, magnetorotational turbulence removes energy from a disk's orbital motion and transforms it into heat. Turbulent heating is far from uniform and is usually concentrated in small regions of intense dissipation,…

High Energy Astrophysical Phenomena · Physics 2018-04-11 Johnathan Ross , Henrik N. Latter

The temperature dependence of the spin relaxation time in multilayer graphene (MLG) spin valve devices was measured using a non-local magnetoresistance (NLMR) measurement. A weak localization (WL) was observed from magnetoresistance (MR)…

Mesoscale and Nanoscale Physics · Physics 2013-04-01 Takehiro Yamaguchi , Rai Moriya , Satoru Masubuchi , Kazuyuki Iguchi , Tomoki Machida

The influence of a thermal gradient on the propagation properties of externally excited dipolar spin waves in a magnetic insulator waveguide is investigated. It is shown that spin waves propagating towards a colder region along the…

Mesoscale and Nanoscale Physics · Physics 2013-10-09 Björn Obry , Vitaliy I. Vasyuchka , Andrii V. Chumak , Alexander A. Serga , Burkard Hillebrands