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相关论文: Spin-Hall magnetoresistance in quasi-two-dimension…

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We consider a microscopic theory for the spin Hall magnetoresistance (SMR). We generally formulate a spin conductance at an interface between a normal metal and a magnetic insulator in terms of spin susceptibilities. We reveal that SMR is…

介观与纳米尺度物理 · 物理学 2020-11-17 Takeo Kato , Yuichi Ohnuma , Mamoru Matsuo

We present a theory of the spin Hall magnetoresistance (SMR) in multilayers made from an insulating ferromagnet F, such as yttrium iron garnet (YIG), and a normal metal N with spin-orbit interactions, such as platinum (Pt). The SMR is…

We investigate the observation of negative spin Hall magnetoresistance (SMR) in antiferromagnetic Cr2O3/Ta bilayers at low temperature. The sign of the SMR signals is changed from positive to negative monotonously from 300 K to 50 K. The…

材料科学 · 物理学 2018-06-12 Y. Ji , J. Miao , Y. M. Zhu , K. K. Meng , X. G. Xu , J. K. Chen , Y. Wu , Y. Jiang

Spin Hall magnetoresistance (SMR), the variation in resistance in a heavy metal (HM) with the magnetization orientation of an adjacent ferromagnet (FM), has been extensively studied as a powerful tool for probing surface magnetic moments in…

介观与纳米尺度物理 · 物理学 2025-01-03 Ping Tang

We report the observation of the three-dimensional angular dependence of the spin Hall magnetoresistance (SMR) in a bilayer of the epitaxial antiferromagnetic insulator NiO(001) and the heavy metal Pt, without any ferromagnetic element. The…

Spin Hall magnetoresistance (SMR) refers to a resistance change in a metallic film reflecting the magnetization direction of a magnet attached to the film. The mechanism of this phenomenon is spin exchange between conduction-electron spins…

We present the Co-Gd composition dependence of the spin-Hall magnetoresistance (SMR) and anisotropic magnetoresistance (AMR) for ferrimagnetic Co100-xGdx / Pt bilayers. With Gd concentration x, its magnetic moment increasingly competes with…

材料科学 · 物理学 2018-09-14 W. Zhou , T. Seki , T. Kubota , G. E. W. Bauer , K. Takanashi

Spin Hall magnetoresistance (SMR) and magnon excitation magnetoresistance (MMR) that all generate via the spin Hall effect and inverse spin Hall effect in a nonmagnetic material are always related to each other. However, the influence of…

材料科学 · 物理学 2020-03-02 Q. B. Liu , K. K. Meng , S. Q. Zheng , Y. C. Wu , J. Miao , X. G. Xu , Y. Jiang

Colossal magnetoresistance (CMR) refers to a large change in electrical conductivity induced by a magnetic field in the vicinity of a metal-insulator transition and has inspired extensive studies for decades\cite{Ramirez1997, Tokura2006}.…

材料科学 · 物理学 2018-08-01 Zhiyong Qiu , Dazhi Hou , Joseph Barker , Kei Yamamoto , Olena Gomonay , Eiji Saitoh

We studied the magnetoresistance of normal metal (NM)/ferromagnet (FM) bilayers in the linear and nonlinear (current-dependent) regimes and compared it with the amplitude of the spin-orbit torques and thermally induced electric fields. Our…

We study the temperature dependence of the spin Hall magnetoresistance (SMR) in yttrium iron garnet/platinum hybrid structures via magnetization orientation dependent magnetoresistance measurements. Our experiments show a decrease of the…

介观与纳米尺度物理 · 物理学 2015-09-10 Sibylle Meyer , Matthias Althammer , Stephan Geprägs , Matthias Opel , Rudolf Gross , Sebastian T. B. Goennenwein

In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F), the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall effect gives a small correction to the in-plane…

介观与纳米尺度物理 · 物理学 2021-07-15 David A. Reiss , Tobias Kampfrath , Piet W. Brouwer

We develop a theory of angle-dependent magnetoresistance (ADMR) in metallic altermagnets coupled to ferromagnetic insulators and establish criteria that distinguish them from conventional compensated magnets with spin-orbit coupling. We…

介观与纳米尺度物理 · 物理学 2026-05-12 Tim Kokkeler , Vitaly N. Golovach , F. Sebastian Bergeret

We report on spin Hall magnetoresistance (SMR) measurements of Pt Hall bars on the antiferromagnetic NiO(111) single crystal. An SMR with a sign opposite of conventional SMR is observed over a wide range of temperatures as well as magnetic…

介观与纳米尺度物理 · 物理学 2017-08-08 Geert R. Hoogeboom , Aisha Aqeel , Timo Kuschel , Thomas T. M. Palstra , Bart J. van Wees

We investigate the thickness and temperature dependence of a series of Ni0:8Fe0:2/Ir0:2Mn0:8 bilayer samples with varying thickness ratio of the ferromagnet/antiferromagnet (tFM/tAFM) in order to explore the exchange coupling strengths in…

介观与纳米尺度物理 · 物理学 2016-08-02 H. Reichlova , V. Novak , Y. Kurosaki , M. Yamada , H. Yamamoto , A. Nishide , J. Hayakawa , H. Takahashi , M. Marysko , J. Wunderlich , X. Marti , T. Jungwirth

A theoretical formulation for spin transport through an antiferromagnetic (AF) insulator is presented in the case driven/detected by direct/inverse spin Hall effect in two heavy metal contacts. The spin signal is shown to be transferred by…

介观与纳米尺度物理 · 物理学 2019-05-15 Gen Tatara , Christian Ortiz Pauyac

We predict the emergence of spin Hall magnetoresistance in a magnetic bilayer composed of a normal metal adjacent to an antiferromagnet. Based on a recently derived drift-diffusion equation, we show that the resistance of the bilayer…

材料科学 · 物理学 2017-05-24 A. Manchon

We systematically studied the magnetoresistance effect in a Pt/(CoNi)n multilayer system with perpendicular magnetic anisotropy and the fcc (111) texture. The angular dependence of magnetoresistance, including high-order cosine terms, was…

We predict a spin anomalous-Hall unidirectional magnetoresistance (AH-UMR) in conducting bilayers composed of a ferromagnetic layer and a nonmagnetic layer, which does $\textit{not}$ rely on the spin Hall effect in the normal metal…

介观与纳米尺度物理 · 物理学 2022-05-30 M. Mehraeen , Steven S. -L. Zhang

We investigate ferromagnetic resonance (FMR) modulation in $d$-wave superconductor (SC)/ferromagnetic insulator (FI) bilayer systems theoretically. The modulation of the Gilbert damping in these systems reflects the existence of nodes in…

介观与纳米尺度物理 · 物理学 2022-05-06 Yuya Ominato , Ai Yamakage , Takeo Kato , Mamoru Matsuo