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We study the phase diagram of spin ladders with ferromagnetic legs under the influence of a symmetry breaking magnetic field in the weak coupling effective field theory by bosonization. For antiferromagnetic interleg coupling we identify…

Strongly Correlated Electrons · Physics 2009-11-10 T. Vekua , G. I. Japaridze , H. -J. Mikeska

The electric-field control of magnetism is a highly promising and potentially effective approach for achieving energy-efficient applications. In recent times, there has been significant interest in the magneto-ionic effect in synthetic…

We have performed non-local spin injection into a nano-scale ferromagnetic particle configured in a lateral spin valve structure to switch its magnetization only by spin current. The non-local spin injection aligns the magnetization of the…

Materials Science · Physics 2007-05-23 T. Kimura , Y. Otani , J. Hamrle

We study current-induced switching in magnetic tunnel junctions (MTJs) in the presence of a field-like spin-transfer torque and titled pinned-layer magnetization in the high current limit at finite temperature. We consider both the…

Mesoscale and Nanoscale Physics · Physics 2014-03-21 R. K. Tiwari , M. H. Jhon , N. Ng , D. J. Srolovitz , Chee Kwan Gan

The magnetic structures of MnBi2Te4(Bi2Te3)n can be manipulated by tuning the interlayer coupling via the number of Bi2Te3 spacer layers n, while the intralayer ferromagnetic (FM) exchange coupling is considered too robust to control. By…

We demonstrate magnetization switching in out-of-plane magnetized Ta\CoFeB\MgO nanowires by current pulse injection along the nanowires, both with and without a constant and uniform magnetic field collinear to the current direction. We…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 R. Lo Conte , A. Hrabec , A. P. Mihai , T. Schulz , S. -J. Noh , C. H. Marrows , T. A. Moore , M. Kläui

We report on the combination of current-induced spin-orbit torques and giant magnetoresistance in a single device to achieve all-electrical write and read out of the magnetization. The device consists of perpendicularly magnetized TbCo and…

Mesoscale and Nanoscale Physics · Physics 2021-08-13 Can Onur Avci , Charles-Henri Lambert , Giacomo Sala , Pietro Gambardella

Two ferromagnetic layers magnetically decoupled by a thick normal metal spacer layer can be, nevertheless, dynamically coupled via spin currents emitted by the spin-pump and absorbed through the spin-torque effects at the neighboring…

Mesoscale and Nanoscale Physics · Physics 2014-04-14 A. A. Timopheev , Yu. G. Pogorelov , S. Cardoso , P. P. Freitas , G. N. Kakazei , N. A. Sobolev

Pulsed current-induced magnetization reversal is investigated in the layer of (Ga,Mn)(Bi,As) dilute ferromagnetic semiconductor (DFS) epitaxially grown under tensile misfit strain causing perpendicular magnetic anisotropy in the layer. The…

Materials Science · Physics 2025-05-13 Tomasz Andrearczyk , Janusz Sadowski , Krzysztof Dybko , Tadeusz Figielski , Tadeusz Wosinski

We report on the current-induced magnetization switching of a three-terminal perpendicular magnetic tunnel junction by spin-orbit torque and the read-out using the tunnelling magnetoresistance (TMR) effect. The device is composed of a…

Collinear antiferromagnets (AFs) support two degenerate magnon excitations carrying opposite spin polarizations, by which magnons can function as electrons in various spin-related phenomena. In an insulating ferromagnet(F)/AF/F trilayer, we…

Mesoscale and Nanoscale Physics · Physics 2018-11-21 Ran Cheng , Di Xiao , Jian-Gang Zhu

Spin Hall effect (SHE) induced reversal of perpendicular magnetization has attracted significant interest, due to its potential to lead to low power memory and logic devices. However, the switching requires an assisted in-plane magnetic…

Materials Science · Physics 2017-10-11 Zhengyang Zhao , Angeline Klemm Smith , Mahdi Jamali , Jian-Ping Wang

We present theoretical description of the precessional switching processes induced by simultaneous application of spin-polarized current and external magnetic field to antiferromagnetic component of the "pinned" layer. We found stability…

Other Condensed Matter · Physics 2013-05-29 Helen V. Gomonay , Vadim M. Loktev

Spin-orbit torque (SOT)-induced magnetization switching shows promise for realizing ultrafast and reliable spintronics devices. Bipolar switching of perpendicular magnetization via SOT is achieved under an in-plane magnetic field collinear…

Materials Science · Physics 2016-05-04 Shunsuke Fukami , Chaoliang Zhang , Samik DuttaGupta , Hideo Ohno

The spin Hall effect (SHE) generates spin currents within nonmagnetic materials. Previously, studies of the SHE have been motivated primarily to understand its fundamental origin and magnitude. Here we demonstrate, using measurement and…

Materials Science · Physics 2013-05-30 Luqiao Liu , O. J. Lee , T. J. Gudmundsen , D. C. Ralph , R. A. Buhrman

Spin-orbit coupling in ferromagnets gives rise to the anomalous Hall effect and the anisotropic magnetoresistance, both of which can be used to create spin-transfer torques in a similar manner as the spin Hall effect. In this paper we show…

Materials Science · Physics 2014-11-19 Tomohiro Taniguchi , J. Grollier , M. D. Stiles

Current-induced magnetization switching through spin-orbit torques (SOTs) is the fundamental building block of spin-orbitronics. The SOTs generally arise from the spin-orbit coupling of heavy metals. However, even in a heterostructure where…

Materials Science · Physics 2017-09-22 Hongyu An , Takeo Ohno , Yusuke Kanno , Yuito Kageyama , Yasuaki Monnai , Hideyuki Maki , Ji Shi , Kazuya Ando

Spin waves in insulating magnets are ideal carriers for spin currents with low energy dissipation. An electric field can modify the dispersion of spin waves, by directly affecting, via spin-orbit coupling, the electrons that mediate the…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Tianyu Liu , G. Vignale

The impact of in-plane alternating currents on the exchange bias, resistance, and magnetoresistance of a CoFe/NiCoO/CoFe/Cu/CoFe spin-valve is studied. With increasing current, the resistance is increased while the maximum magnetoresistance…

Materials Science · Physics 2008-01-11 D. N. H. Nam , N. C. Thuan , L. V. Hong , N. X. Phuc , S. A. Wolf , N. V. Dai , Y. P. Lee

An approach to the electrostatic control of $90^{\circ}$ magnetization rotation in the hybrid structures composed of topological insulators (TIs) and adjacent ferromagnetic insulators (FMI) is proposed and studied. The concept is based on…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Yuriy G Semenov , Xiaopeng Duan , Ki Wook Kim
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