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相关论文: Spin pinning and spin-wave dispersion in nanoscopi…

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We report temperature-dependent spin-Seebeck measurements on Pt/YIG bilayers and Pt/NiO/YIG trilayers, where YIG (Yttrium iron garnet, Y$_3$Fe$_5$O$_{12}$) is an insulating ferrimagnet and NiO is an antiferromagnet at low temperatures. The…

材料科学 · 物理学 2016-08-17 Arati Prakash , Jack Brangham , Fengyuan Yang , Joseph P. Heremans

We study the magnon spin transport in the magnetic insulator yttrium iron garnet (YIG) in a nonlocal experiment and compare the magnon spin excitation and detection for the heavy metal paramagnetic electrodes platinum (Pt|YIG|Pt) and…

介观与纳米尺度物理 · 物理学 2018-06-05 Jing Liu , Ludo J. Cornelissen , Juan Shan , Bart J. van Wees , Timo Kuschel

The temperature and yttrium-iron-garnet (YIG) thickness dependences of the spin Peltier effect (SPE) have been investigated using a Pt/YIG junction system at temperatures ranging from room temperature to the Curie temperature of YIG by the…

介观与纳米尺度物理 · 物理学 2022-10-26 Atsushi Takahagi , Takamasa Hirai , Ryo Iguchi , Keita Nakagawara , Hosei Nagano , Ken-ichi Uchida

30-80 nm thick yttrium iron garnet (YIG) films are grown by pulsed laser deposition on a 5 nm thick sputtered Pt atop gadolinium gallium garnet substrate (GGG) (110). Upon post-growth rapid thermal annealing, single crystal YIG(110) emerges…

Rare-earth nitrides, such as gadolinium nitride (GdN), have great potential for spintronic devices due to their unique magnetic and electronic properties. GdN has a large magnetic moment, low coercitivity and strong spin polarization…

Power limiters are essential devices in modern radio frequency (RF) communications systems to protect highly sensitive input channels from large incoming signals. Nowadays-used semiconductor limiters suffer from high electronic noise and…

We show that in YIG-Pt bi-layers, which are widely used in experiments on the spin transfer torque and spin Hall effects, the spin-wave amplitude significantly decreases in comparison to a single YIG film due to the excitation of microwave…

介观与纳米尺度物理 · 物理学 2023-11-01 Dmytro A. Bozhko , Alexander A. Serga , Milan Agrawal , Burkard Hillebrands , Mikhail P. Kostylev

Nonreciprocal magnon propagation has recently become a highly potential approach of developing chip-embedded microwave isolators for advanced information processing. However, it is challenging to achieve large nonreciprocity in miniaturized…

介观与纳米尺度物理 · 物理学 2023-07-26 Yi Li , Tzu-Hsiang Lo , Jinho Lim , John E. Pearson , Ralu Divan , Wei Zhang , Ulrich Welp , Wai-Kwong Kwok , Axel Hoffmann , Valentine Novosad

Magnons are quantised collective excitations of long-range ordered spins. At nanometre wavelengths, exchange interactions increasingly govern their dynamics, giving rise to a largely unexplored regime of couplings between magnons and other…

Spin waves are promising chargeless information carriers for the future, energetically efficient beyond-CMOS systems. Among many advantages there are the ease of achieving nonlinearity, the variety of possible interactions, and excitation…

介观与纳米尺度物理 · 物理学 2022-03-22 Pawel Gruszecki , Konstantin Y. Guslienko , Igor L. Lyubchanskii , Maciej Krawczyk

We study theoretically and experimentally the process of Brillouin light scattering on an array of silicon disks on a thin Permalloy layer. We show that phase-resolved Brillouin light scattering microscopy performed on an array of weakly…

We report the observation of strong coupling between the exchange-coupled spins in gallium-doped yttrium iron garnet and a superconducting coplanar microwave resonator made from Nb. The measured coupling rate of 450 MHz is proportional to…

We report on the deformation of microwave absorption spectra and of the inverse spin Hall voltage signals in thin film bilayers of yttrium iron garnet (YIG) and platinum at high microwave power levels in a 9.45-GHz TE011 cavity. As the…

介观与纳米尺度物理 · 物理学 2015-02-19 J. Lustikova , Y. Shiomi , Y. Handa , E. Saitoh

We introduce a novel approach for the investigation of spin-wave excitations in itinerant ferromagnets. Our theory is based on a variational treatment of general multi-band Hubbard models which describe elements and compounds of transition…

强关联电子 · 物理学 2009-10-31 J. Buenemann

We report the frequency dependence of the spin current emission in a hybrid ferrimagnetic insulator/normal metal system as function of the insulating layer thickness. The system is based on a yttrium iron garnet (YIG) film [0.2, 1, and 3…

材料科学 · 物理学 2015-01-08 V. Castel , N. Vlietstra , J. Ben Youssef , B. J. van Wees

We study the effect of a magnetic insulator (Yttrium Iron Garnet - YIG) substrate on the spin transport properties of Ni$_{80}$Fe$_{20}$/Al nonlocal spin valve (NLSV) devices. The NLSV signal on the YIG substrate is about 2 to 3 times lower…

介观与纳米尺度物理 · 物理学 2015-03-30 F. K. Dejene , N. Vlietstra , D. Luc , X. Waintal , J. Ben Youssef , B. J. van Wees

The mid-infrared spin-wave spectrum of antiferromagnetic YBa$_2$Cu$_3$O$_{6.0}$\ was determined by infrared transmission and reflection measurements ($\bbox{k} \!\! \parallel $c) at $T\!=\!10\!$~K.\@ Excitation of single magnons of the…

凝聚态物理 · 物理学 2010-05-24 M. Grüninger , J. Münzel , A. Gaymann , A. Zibold , H. P. Geserich , T. Kopp

The formation of quasi-2D spin-wave waveforms in longitudinally magnetized stripes of ferrimagnetic film was observed by using time- and space-resolved Brillouin light scattering technique. In the linear regime it was found that the…

斑图形成与孤子 · 物理学 2007-05-30 A. A. Serga , M. Kostylev , B. Hillebrands

We introduce a new type of binary magnonic crystal, where Ni$_{80}$Fe$_{20}$ nanodots of two different sizes are diagonally connected forming a unit and those units are arranged in a square lattice. The magnetization dynamics of the sample…

介观与纳米尺度物理 · 物理学 2020-02-26 Nikita Porwal , Koustuv Dutta , Sucheta Mondal , Samiran Choudhury , Jaivardhan Sinha , Anjan Barman , P. K. Datta

We present a novel process that allows the transfer of monocrystalline yttrium-iron-garnet microstructures onto virtually any kind of substrate. The process is based on a recently developed method that allows the fabrication of freestanding…

介观与纳米尺度物理 · 物理学 2021-02-03 P. Trempler , R. Dreyer , P. Geyer , C. Hauser , G. Woltersdorf , G. Schmidt