0000000000547860

AUTHOR

Dazhi Hou

showing 3 related works from this author

Tunable Sign Change of Spin Hall Magnetoresistance in Pt/NiO/YIG Structures

2017

Spin Hall magnetoresistance (SMR) has been investigated in Pt/NiO/YIG structures in a wide range of temperature and NiO thickness. The SMR shows a negative sign below a temperature that increases with the NiO thickness. This is contrary to a conventional SMR theory picture applied to the Pt/YIG bilayer, which always predicts a positive SMR. The negative SMR is found to persist even when NiO blocks the spin transmission between Pt and YIG, indicating it is governed by the spin current response of the NiO layer. We explain the negative SMR by the NiO "spin flop" coupled with YIG, which can be overridden at higher temperature by positive SMR contribution from YIG. This highlights the role of m…

Materials scienceCondensed matter physicsMagnetic structureMagnetoresistanceBilayerNon-blocking I/Otechnology industry and agricultureGeneral Physics and Astronomy02 engineering and technologySpin current021001 nanoscience & nanotechnology01 natural sciencesrespiratory tract diseases0103 physical sciencesotorhinolaryngologic diseases010306 general physics0210 nano-technologySign (mathematics)Spin-½Physical Review Letters
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Magnon detection using a ferroic collinear multilayer spin valve

2018

Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current-driven spintronic devices. The absence of Joule heating and reduced spin wave damping in insulating ferromagnets have been suggested for implementing efficient logic devices. After the successful demonstration of a majority gate based on the superposition of spin waves, further components are required to perform complex logic operations. Here, we report on magnetization orientation-dependent spin current detection signals in collinear magnetic multilayers inspired by the functionality of a conventional spin valve. In Y3Fe5O12|CoO|Co, we find that the de…

Materials scienceMagnetoresistance530 PhysicsScienceSpin valveGeneral Physics and Astronomy02 engineering and technology01 natural sciencesArticleGeneral Biochemistry Genetics and Molecular BiologyMagnetizationCondensed Matter::Materials ScienceSpin wave0103 physical sciencesddc:530010306 general physicslcsh:ScienceSpin-½MultidisciplinaryCondensed matter physicsSpintronicsCondensed Matter::OtherMagnonQGeneral Chemistry021001 nanoscience & nanotechnology530 PhysikFerromagnetismCondensed Matter::Strongly Correlated Electronslcsh:Q0210 nano-technologyNature Communications
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Ferroic collinear multilayer magnon spin valve

2017

Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current driven spintronic devices. The absence of Joule heating as well as the reduced spin wave damping in insulating ferromagnets has been suggested to enable the implementation of efficient logic devices. After the proof of concept for a logic majority gate based on the superposition of spin waves has been successfully demonstrated, further components are required to perform complex logic operations. A key component is a switch that corresponds to a conventional magnetoresistive spin valve. Here, we report on magnetization orientation dependent spin signal d…

Condensed Matter - Materials ScienceMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesCondensed Matter::Strongly Correlated Electrons
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