Coherent ac spin current transmission across an antiferromagnetic CoO insulator

Autor: Q. Li, M. Yang, C. Klewe, P. Shafer, A. T. N’Diaye, D. Hou, T. Y. Wang, N. Gao, E. Saitoh, C. Hwang, R. J. Hicken, J. Li, E. Arenholz, Z. Q. Qiu

Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)

The mechanism underpinning the frequency mismatch between THz magnons and the GHz spin currents observed in antiferromagnetic insulators remains unknown. Here, the authors demonstrate that, in a Py/Ag/CoO/Ag/Fe75Co25/MgO(001) heterostructure, a GHz s

Externí odkaz: https://doaj.org/article/77719a8377b3455c8778b16fc8db0dce

Transition Metal Synthetic Ferrimagnets: Tunable Media for All-Optical Switching Driven by Nanoscale Spin Current

Autor: J. Scott, Alpha T. N'Diaye, William Hendren, Gerrit van der Laan, R. J. Hicken, Robert M. Bowman, Connor R. J. Sait, D. M. Burn, David G. Newman, Andreas Frisk, Maciej Dabrowski, Paul Steven Keatley, Colin M. Forbes, Thorsten Hesjedal

Publikováno v: Da̧browski, M, Scott, J N, Hendren, W R, Forbes, C M, Frisk, A, Burn, D M, Newman, D G, Sait, C R J, Keatley, P S, N’Diaye, A T, Hesjedal, T, van der Laan, G, Bowman, R M & Hicken, R J 2021, ' Transition Metal Synthetic Ferrimagnets: Tunable Media for All-Optical Switching Driven by Nanoscale Spin Current ', Nano Letters . https://doi.org/10.1021/acs.nanolett.1c03081

All-optical switching of magnetization has great potential for use in future ultrafast and energy efficient nanoscale magnetic storage devices. So far, research has been almost exclusively focused on rare-earth based materials, which limits device tu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74701b981547c515eae367f762a42064
https://doi.org/10.1021/acs.nanolett.1c03081

A Ferrite-Filled Cavity Resonator for Electronic Article Surveillance on Metallic Packaging

Autor: Alastair P. Hibbins, R. J. Hicken, Ian R. Hooper, Paul Steven Keatley, Ben Tremain, E. R. Glover

Publikováno v: IEEE Transactions on Magnetics. 55:1-10

Conventional electronic article surveillance (EAS) tags are ineffective on metallic packaging. The component of the RF magnetic field perpendicular to the surface of the packaging induces eddy currents that suppress the magnetic flux, linking the ind

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49e966c0fccdede20c34db2d534a410a
https://doi.org/10.1109/tmag.2019.2944589

Optically and Microwave-Induced Magnetization Precession in [Co/Pt]/NiFe Exchange Springs

Autor: R. J. Hicken, Christoph Klewe, G. van der Laan, Gino Hrkac, Andreas Frisk, David G. Newman, Maciej Dabrowski, G. J. Bowden, Alpha T. N'Diaye, D. M. Burn, Thorsten Hesjedal, Padraic Shafer, Elke Arenholz

Publikováno v: ACS applied materialsinterfaces. 12(46)

Microwave and heat-assisted magnetic recordings are two competing technologies that have greatly increased the capacity of hard disk drives. The efficiency of the magnetic recording process can be further improved by employing non-collinear spin stru

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbb30ff9cf60944dded50b75fc75e833
https://pubmed.ncbi.nlm.nih.gov/33156990

Time-domain imaging of curling modes in a confined magnetic vortex and a micromagnetic study exploring the role of spiral spin waves emitted by the core

Autor: R. J. Hicken, Jordan A. Katine, Feodor Y. Ogrin, Alastair P. Hibbins, Paul Steven Keatley, D. Osuna Ruiz, Jeffrey R. Childress

The curling spin wave modes of a ferromagnetic vortex confined to a microscale disc have been directly imaged in response to a microwave field excitation using time-resolved scanning Kerr microscopy. Micromagnetic simulations have been used to explor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b687fd77101a05d1a26e3c03c48146e6