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相关论文: Optical detection of spin orbit torque and current…

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Magneto-optical Kerr effect (MOKE) is an efficient approach to probe surface magnetization in thin film samples. Here we present a wide-field MOKE technique that adopts a K$\"o$hler illumination scheme to characterize the current-induced…

材料科学 · 物理学 2018-06-01 Tsung-Yu Tsai , Tian-Yue Chen , Chun-Ting Wu , Hsin-I Chan , Chi-Feng Pai

We formulate a theory of current-induced spin torques in inhomogeneous III-V ferromagnetic semiconductors. The carrier spin-3/2 and large spin-orbit interaction, leading to spin non-conservation, introduce significant conceptual differences…

其他凝聚态物理 · 物理学 2015-05-13 Dimitrie Culcer , M. E. Lucassen , R. A. Duine , R. Winkler

The distribution is calculated of the electron spin polarization under current-driven spin injection from a probe to a ferromagnetic film. It is shown that the main parameters determining difference of the spin polarization from the…

材料科学 · 物理学 2009-12-15 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , A. I. Panas , V. G. Shofman , P. E. Zilberman

Spin transfer torques allow the electrical manipulation of the magnetization at room temperature, which is desirable in spintronic devices such as spin transfer torque memories. When combined with spin-orbit coupling, they give rise to…

In this article we extend the currently established diffusion theory of spin-dependent electrical conduction by including spin-dependent thermoelectricity and thermal transport. Using this theory, we propose new experiments aimed at…

介观与纳米尺度物理 · 物理学 2012-01-17 A. Slachter , F. L. Bakker , B. J. van Wees

In magnetically ordered solids a static magnetic field can be generated by virtue of the transverse magneto-optical Kerr effect (TMOKE). Moreover, the latter was shown to be dramatically enhanced due to the optical excitation of surface…

介观与纳米尺度物理 · 物理学 2018-06-14 Stanislav Kolodny , Dmitry Yudin , Ivan Iorsh

Using one of the methods of quantum nonequilibrium statistical physics we have investigated the spin transport transverse to the normal metal/ferromagnetic insulator interface in hybrid nanostructures. An approximation of the effective…

介观与纳米尺度物理 · 物理学 2015-06-11 I. I. Lyapilin , M. S. Okorokov , V. V. Ustinov

We develop a theory of spin noise spectroscopy of itinerant, noninteracting, spin-carrying fermions in different regimes of temperature and disorder. We use kinetic equations for the density matrix in spin variables. We find a general…

统计力学 · 物理学 2015-05-14 Simon Kos , Alexander V. Balatsky , Peter B. Littlewood , Darryl L. Smith

We report unambiguously experimental evidence of a strong orbital current in Nb films with weak spin-orbit coupling via the spin-torque ferromagnetic resonance (ST-FMR) spectrum for Fe/Nb and Co/Nb bilayers. The sign change of the…

应用物理 · 物理学 2023-02-22 Fufu Liu , Bokai Liang , Jie Xu , Chenglong Jia , Changjun Jiang

Spin wave propagation along a ferrimagnetic strip with out-of-plane magnetization is studied by means of micromagnetic simulations. The ferrimagnetic material is considered as formed by two antiferromagnetically coupled sublattices. Two…

We report the observation of longitudinal spin Seebeck effects (LSSE) in an all-oxide bilayer system comprising an IrO$_2$ film and an Y$_3$Fe$_5$O$_{12}$ film. Spin currents generated by a temperature gradient across the…

材料科学 · 物理学 2016-08-04 Z. Qiu , D. Hou , K. Uchida , E. Saitoh

Since the discovery of the giant magnetoresistance (GMR) effect the use of the intrinsic angular momentum of the electrons has opened up new spin based device concepts. The two channel model of spin-up and spin-down electrons with…

介观与纳米尺度物理 · 物理学 2014-12-24 F. K. Dejene , J. Flipse , G. E. W. Bauer , B. J. van Wees

We study the dynamics of optically-induced nuclear spin polarization in a fluorine-doped ZnSe epilayer via time-resolved Kerr rotation. The nuclear polarization in the vicinity of a fluorine donor is induced by interaction with coherently…

介观与纳米尺度物理 · 物理学 2016-02-24 F. Heisterkamp , E. Kirstein , A. Greilich , E. A. Zhukov , T. Kazimierczuk , D. R. Yakovlev , A. Pawlis , M. Bayer

We consider a double quantum dot in the Pauli blockade regime interacting with a nearby single spin. We show that under microwave irradiation the average electron occupations of the dots exhibit resonances that are sensitive to the state of…

介观与纳米尺度物理 · 物理学 2015-05-18 G. Giavaras , J. Wabnig , B. W. Lovett , J. H. Jefferson , G. A. D. Briggs

We present a time-resolved study of the DC-current driven magnetization dynamics in a microstructured Cr/Heusler/Pt waveguide by means of Brillouin light scattering. A reduction of the effective spin-wave damping via the…

介观与纳米尺度物理 · 物理学 2017-09-05 T. Meyer , T. Brächer , F. Heussner , A. A. Serga , H. Naganuma , K. Mukaiyama , M. Oogane , Y. Ando , B. Hillebrands , P. Pirro

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…

介观与纳米尺度物理 · 物理学 2017-04-10 Rik Dey , Anupam Roy , Tanmoy Pramanik , Amritesh Rai , Seung Heon Shin , Sarmita Majumder , Leonard F. Register , Sanjay K. Banerjee

The recently predicted mechanism of orbital pumping enables the generation of pure orbital current from a precessing ferromagnet (FM) without the need for electrical current injection. This orbital current can be efficiently injected into…

Magnetic insulators are promising materials for the development of energy-efficient spintronics. Unlike metallic counterparts, the magnetic insulators are characterized by imaginary part of the interfacial spin mixing conductance as well in…

介观与纳米尺度物理 · 物理学 2020-11-24 Kuntal Roy

The spin injection and accumulation in metallic lateral spin valves with transparent interfaces is studied using d.c. injection current. Unlike a.c.-based techniques, this allows investigating the effects of the direction and magnitude of…

介观与纳米尺度物理 · 物理学 2009-06-12 Fèlix Casanova , Amos Sharoni , Mikhail Erekhinsky , Ivan K. Schuller

The technique of propagating spin wave spectroscopy is applied to a 20 nm thick Fe/MgO (001) film. The magnetic parameters extracted from the position of the resonance peaks are very close to those tabulated for bulk iron. From the…

材料科学 · 物理学 2017-11-22 Olga Gladii , David Halley , Yves Henry , Matthieu Bailleul