Zobrazeno 1 - 10
of 488
pro vyhledávání: '"Holmgren E"'
Autor:
Polishchuk, D. M., Persson, M., Kulyk, M. M., Holmgren, E., Pasquale, G., Ullah, A., Skomski, R., Korenivski, V.
The magnetocaloric effect in exchange-coupled synthetic-antiferromagnet multilayers is investigated experimentally and theoretically. We observe a temperature-controlled inversion of the effect, where the entropy increases on switching the individual
Externí odkaz:
http://arxiv.org/abs/2109.06946
Effects of magnetic asymmetry on strongly coupled spin-vortex pairs with parallel core polarization and antiparallel chirality in synthetic nanomagnets are investigated. This includes vortex-core length asymmetry, biasing field asymmetry, and pinning
Externí odkaz:
http://arxiv.org/abs/1812.03907
Akademický článek
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Autor:
Polishchuk, D. M., Tykhonenko-Polishchuk, Yu. O., Holmgren, E., Kravets, A. F., Tovstolytkin, A. I., Korenivski, V.
Publikováno v:
Phys. Rev. Materials 2, 114402 (2018)
Indirect exchange coupling in magnetic multilayers, also known as the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, is known to be highly effective in controlling the interlayer alignment of the magnetization. This coupling is typically fixed at
Externí odkaz:
http://arxiv.org/abs/1808.01291
Publikováno v:
Applied Physics Letters 112, 192405 (2018)
Spin vortices in magnetic nanopillars are used as GHz oscillators, with frequency however essentially fixed in fabrication. We demonstrate a model system of a two-vortex nanopillar, in which the resonance frequency can be changed by an order of magni
Externí odkaz:
http://arxiv.org/abs/1803.08413
Publikováno v:
Phys. Rev. B 99, 054402 (2019)
We report on spin-vortex pair dynamics measured at temperatures low enough to suppress stochastic core motion, thereby uncovering the highly non-linear intrinsic dynamics of the system. Our analysis shows that the decoupling of the two vortex cores i
Externí odkaz:
http://arxiv.org/abs/1802.08271
Publikováno v:
Phys. Rev. B 97, 094406 (2018)
Vortex pairs in magnetic nanopillars with strongly coupled cores and pinning of one of the cores by a morphological defect, are used to perform resonant pinning spectroscopy, in which a microwave excitation applied to the nanopillar produces pinning
Externí odkaz:
http://arxiv.org/abs/1712.10162
Autor:
Polishchuk, D. M., Tykhonenko-Polishchuk, Yu. O., Holmgren, E., Kravets, A. F., Korenivski, V.
Publikováno v:
Phys. Rev. B 96, 104427 (2017)
We demonstrate sharp thermally-induced switching between ferromagnetic and antiferromagnetic RKKY exchange in a spin-valve with the spacer incorporating a thin diluted ferromagnetic layer as the core. We illustrate the mechanism behind the effect as
Externí odkaz:
http://arxiv.org/abs/1706.06325
Autor:
Mohanty, Sanjay K, Rasul, Golam, Mahapatra, Bidhubhusan, Choudhury, Dhrupad, Tuladhar, Sabarnee, Holmgren, E. Valdemar
Publikováno v:
Social Indicators Research, 2018 Jul 01. 138(1), 23-44.
Externí odkaz:
https://www.jstor.org/stable/48715109
Akademický článek
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