Zobrazeno 1 - 10
of 11
pro vyhledávání: '"B. C. Koop"'
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 056007-056007-7 (2017)
We demonstrate that strongly-bound spin-vortex pairs exhibit pronounced stochastic behaviour. Such dynamics is due to collective magnetization states originating from purely dipolar interactions between the vortices. The resulting thermal noise exhib
Externí odkaz:
https://doaj.org/article/ff4036b10201456c9154e3faf3d6bbd2
Publikováno v:
AIP Advances, Vol 6, Iss 5, Pp 056406-056406-6 (2016)
Stacked spin-vortex pairs in magnetic multilayered nanopillars, with vertical separation between the vortices small compared to the vortex core size and pure magnetostatic coupling, exhibit spin dynamics absent in individual vortices. This dynamics i
Externí odkaz:
https://doaj.org/article/6893b241693c49e78d7ffd49f089807d
Publikováno v:
IEEE Transactions on Magnetics. 53:1-5
We study the effects of pinning on the quasi-static behavior of stacked, strongly coupled spin-vortex pairs in magnetic multilayered nanopillars, with vertical vortex separation small compared with the vortex-core size. The small separation causes th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a744232937d9555caecc3078bbfb622
https://doi.org/10.1109/tmag.2017.2697204
https://doi.org/10.1109/tmag.2017.2697204
Publikováno v:
IEEE Transactions on Magnetics. 53:1-5
Applications of magnetic memory devices greatly benefit from ultra-fast, low-power switching. In this paper, we propose a method for how this can be achieved efficiently in a nano-sized synthetic antiferromagnet by using perpendicular-to-the-plane pi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45e8e19c02dcade941dc70693eb196ac
https://doi.org/10.1109/tmag.2017.2707589
https://doi.org/10.1109/tmag.2017.2707589
Publikováno v:
IEEE Transactions on Magnetics. 50:1-4
Geometric or magnetic asymmetries in synthetic antiferromagnetic particles give rise to ferrimagnetic-like magnetization behavior, both quasi-static and dynamic. Such asymmetries in synthetic ferrimagnets can originate from a thickness imbalance or a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d31354c83a45a78a044628e5b8ddb0b
https://doi.org/10.1109/tmag.2014.2316596
https://doi.org/10.1109/tmag.2014.2316596
Publikováno v:
IEEE Transactions on Magnetics. 50:1-4
We investigate the dynamics of spin vortex pairs in magnetic multilayer particles, with the vortices closely spaced vertically and therefore with strong core-core coupling. We focus on the spin-dynamic behavior of the system beyond the linear small-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f4f39533a5fbbe0133e3bcbe9b2a47a
https://doi.org/10.1109/tmag.2014.2327157
https://doi.org/10.1109/tmag.2014.2327157
Autor:
Volodymyr Pashchenko, S. L. Gnatchenko, Yu. O. Savina, Alexandr Tovstolytkin, B. C. Koop, A. N. Gryshchuk, Yu. I. Dzhezherya, I. M. Kozak, Vladislav Korenivski, A. F. Kravets
Publikováno v:
Physical Review B. 90
Interlayer exchange coupling in strong/weak/strong ferromagnetic multilayers is investigated as a function of external magnetic field and temperature, with the focus on the magnetization switching near the Curie transition in the spacer composed of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa8e59cbf3d1ee1a9fe1005a7da391ee
https://doi.org/10.1103/physrevb.90.104427
https://doi.org/10.1103/physrevb.90.104427
Autor:
B. C. Koop, S. S. Cherepov, Boris A. Ivanov, Roman Khymyn, Daniel C. Worledge, Vladislav Korenivski, A. Yu. Galkin
Publikováno v:
Physical Review Letters. 109
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd32b5038471b4b8e98f588bf9ae8596
https://doi.org/10.1103/physrevlett.109.139902
https://doi.org/10.1103/physrevlett.109.139902
Autor:
B. C. Koop, S. S. Cherepov, Boris A. Ivanov, Vladislav Korenivski, A. Yu. Galkin, Daniel C. Worledge, Roman Khymyn
We investigate magnetic nano-pillars, in which two thin ferromagnetic nanoparticles are separated by a nanometer thin nonmagnetic spacer and can be set into stable spin vortex-pair configurations. The 16 ground states of the vortex-pair system are ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bd4ac4600aa44333c9c58f26df92bb6
http://arxiv.org/abs/1110.4430
http://arxiv.org/abs/1110.4430
Publikováno v:
Physical Review Letters. 107
The magnetic decay time of a synthetic antiferromagnet comprised of two closely spaced magnetic dipoles is measured in the presence of microwave excitation. The system is known to be highly stable with respect to switching between its two antiparalle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c479b4bd48f15b1ce056f51bee3cf87d
https://doi.org/10.1103/physrevlett.107.077202
https://doi.org/10.1103/physrevlett.107.077202