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We measure electrically detected ferromagnetic resonance in microdevices patterned from ultra-thin Co/Pt bilayers. Spin pumping and rectification voltages are observed and distinguished via their angular dependence. The spin-pumping voltage…

介观与纳米尺度物理 · 物理学 2013-04-22 T. D. Skinner , H. Kurebayashi , D. Fang , D. Heiss , A. C. Irvine , A. T. Hindmarch , M. Wang , A. W. Rushforth , A. J. Ferguson

A large anomalous Nernst effect is essential for thermoelectric energy harvesting in the transverse geometry without external magnetic field. It is often connected with anomalous Hall effect, especially when electronic Berry curvature is…

We present the first measurement on Nernst effect in the normal state of odd-parity, spin-triplet superconductor Sr$_{2}$RuO$_{4}$. Below 100 K, the Nernst signal was found to be negative, large, and, as a function of magnetic field,…

强关联电子 · 物理学 2008-07-31 X. F. Xu , Z. A. Xu , T. J. Liu , D. Fobes , Z. Q. Mao , J. L. Luo , Y. Liu

The effect of spin-orbit interaction on electron transport properties of a cross-junction structure is studied. It is shown that it results in spin polarization of left and right outgoing electron waves. Consequently, incoming electron wave…

介观与纳米尺度物理 · 物理学 2009-10-31 E. N. Bulgakov , K. N. Pichugin , A. F. Sadreev , P. Středa , P. Šeba

We present harmonic transverse voltage measurements of current-induced thermoelectric and spin-orbit torque (SOT) effects in ferromagnet/normal metal bilayers, in which thermal gradients produced by Joule heating and SOT coexist and give…

介观与纳米尺度物理 · 物理学 2017-04-25 Can Onur Avci , Kevin Garello , Mihai Gabureac , Abhijit Ghosh , Andreas Fuhrer , Santos F. Alvarado , Pietro Gambardella

A valley-contrasting Berry curvature in bilayer transition metal dichalcogenides with spin-orbit coupling can generate valley magnetization when the inversion symmetry is broken, for example, by an electric field, regardless of…

介观与纳米尺度物理 · 物理学 2021-01-12 Vassilios Vargiamidis , P. Vasilopoulos , M. Tahir , Neophytos Neophytou

Spin pumping in ferromagnets provides a source of pure spin currents. Via the inverse spin Hall effect a spin current is converted into a charge current and a corresponding detectable DC-voltage. The ratio of injected spin current to…

介观与纳米尺度物理 · 物理学 2015-06-16 M. Obstbaum , M. Härtinger , T. Meier , F. Swientek , C. H. Back , G. Woltersdorf

We investigate the Nernst effect in a mesoscopic two-dimensional electron system (2DES) at low magnetic fields, before the onset of Landau level quantization. The overall magnitude of the Nernst signal agrees well with semi-classical…

介观与纳米尺度物理 · 物理学 2015-05-20 Srijit Goswami , Christoph Siegert , Michael Pepper , Ian Farrer , David A. Ritchie , Arindam Ghosh

We report systematic measurements of anomalous Hall effect(AHE) and spin orbit torques(SOT) in MnGa/IrMn films,, in which a single MnGa epitaxial layer reveals obvious orbital two-channel Kondo (2CK) effect. As increasing the thickness of…

介观与纳米尺度物理 · 物理学 2017-01-04 K. K. Meng , J. Miao , X. G. Xu , Y. Wu , X. P. Zhao , J. H. Zhao , Y. Jiang

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

In the past, magnons have been shown to mediate thermal transport of spin in various systems. Here, we reveal that the fundamental coupling of scalar spin chirality, inherent to magnons, to the electronic degrees of freedom in the system…

介观与纳米尺度物理 · 物理学 2019-10-16 Li-chuan Zhang , Fabian R. Lux , Jan-Philipp Hanke , Patrick M. Buhl , Sergii Grytsiuk , Stefan Blügel , Yuriy Mokrousov

We have studied the spin Hall magnetoresistance (SMR), the magnetoresistance within the plane transverse to the current flow, of Pt/Co bilayers. We find that the SMR increases with increasing Co thickness: the effective spin Hall angle for…

介观与纳米尺度物理 · 物理学 2018-06-21 Masashi Kawaguchi , Daiki Towa , Yong-Chang Lau , Saburo Takahashi , Masamitsu Hayashi

The magnetic spin Hall effect (MSHE) is an anomalous charge-to-spin conversion phenomenon which occurs in ferromagnetic materials. In contrast to the conventional spin Hall effect (SHE), being a time-reversal even effect, the magnetic…

材料科学 · 物理学 2022-07-27 Leandro Salemi , Peter M. Oppeneer

Voltages generated from inverse spin Hall and anisotropic magneto-resistance effects via spin pumping in ferromagnetic (F)/non-magnetic (N) bilayers are investigated by means of a broadband ferromagnetic resonance approach. Varying the…

介观与纳米尺度物理 · 物理学 2015-06-15 Vincent Vlaminck , John E. Pearson , Sam D. Bader , Axel Hoffmann

We have carried out detailed experimental studies of the exchange bias effect of a series of CoO/Co(111) textured bilayers with different Co layer thickness, using the magneto-optical Kerr effect, SQUID magnetometry, polarized neutron…

材料科学 · 物理学 2016-08-31 F. Radu , M. Etzkorn , R. Siebrecht , T. Schmitte , K. Westerholt , H. Zabel

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 investigate the effect of orbital current arising from orbital Hall effect in thin films of Nb and Ti in ohmic contact with ferromagnetic Ni in the second harmonic longitudinal and transverse voltages in response to an a.c. current…

介观与纳米尺度物理 · 物理学 2025-06-23 Dhananjaya Mahapatra , Abu Bakkar Miah , HareKrishna Bhunia , Soumik Aon , Partha Mitra

Arising from the interplay between charge, spin and orbital of electrons, spin-orbit torque (SOT) has attracted immense interest in the past decade. Despite vast progress, the existing quantification methods of SOT still have their…

材料科学 · 物理学 2019-11-18 Huanglin Yang , Huanjian Chen , Meng Tang , Shuai Hu , Xuepeng Qiu

Self-induced spin-orbit torques (SI-SOTs) in ferromagnetic (FM) layers have been overlooked when estimating the spin Hall angle (SHA) of adjacent nonmagnetic (NM) layers. In this work, we observe anomalous sign inversion of the total SOT in…

材料科学 · 物理学 2022-11-22 Motomi Aoki , Ei Shigematsu , Ryo Ohshima , Teruya Shinjo , Masashi Shiraishi , Yuichiro Ando

Precise estimation of spin Hall angle as well as successful maximization of spin-orbit torque (SOT) form a basis of electronic control of magnetic properties with spintronic functionality. Until now, current-nonlinear Hall effect, or second…

材料科学 · 物理学 2017-10-02 K. Yasuda , A. Tsukazaki , R. Yoshimi , K. Kondou , K. S. Takahashi , Y. Otani , M. Kawasaki , Y. Tokura