Zobrazeno 1 - 10
of 646
pro vyhledávání: '"Akerman J"'
Autor:
Ghanatian, H., Rajabali, M., Khymyn, R., Kumar, A., González, V. H., Farkhani, H., Åkerman, J., Moradi, F.
Nano-constriction spin-Hall nano-oscillators (NC-SHNOs) have garnered considerable interest due to their potential use as efficient and adjustable nano-sized sources of microwave signals, with high-frequency tunability, adaptable design layout, and C
Externí odkaz:
http://arxiv.org/abs/2412.09277
Nanoscale self-localized topological spin textures, such as domain walls and skyrmions, are of interest for the fundamental physics of magnets and spintronics applications. Ferrimagnets (FiMs), in the region close to the angular momentum compensation
Externí odkaz:
http://arxiv.org/abs/2410.08018
Autor:
Alemán, A., Awad, A. A., Muralidhar, S., Khymyn, R., Kumar, A., Houshang, A., Hanstorp, D., Åkerman, J.
Optical heterodyne detection is a powerful technique for characterizing a wide range of physical excitations. Here, we use two types of optical heterodyne detection techniques (fundamental and parametric pumping) to microscopically characterize the h
Externí odkaz:
http://arxiv.org/abs/2406.01155
Antiferromagnets (AFMs) are promising materials for future high-frequency field-free spintronic applications. Self-localized spin structures can enhance their capabilities and introduce new functionalities to AFM-based devices. Here we consider a dom
Externí odkaz:
http://arxiv.org/abs/2305.02276
Autor:
Bainsla, Lakhan, Kumar, Akash, Awad, Ahmad A., Wang, Chunlei, Zahedinejad, Mohammad, Behera, Nilamani, Fulara, Himanshu, Khymyn, Roman, Houshang, Afshin, Weissenrieder, Jonas, Åkerman, J.
Ferromagnetic materials dominate as the magnetically active element in spintronic devices, but come with drawbacks such as large stray fields, and low operational frequencies. Compensated ferrimagnets provide an alternative as they combine the ultraf
Externí odkaz:
http://arxiv.org/abs/2111.08768
Autor:
Chumak, A. V., Kabos, P., Wu, M., Abert, C., Adelmann, C., Adeyeye, A., Åkerman, J., Aliev, F. G., Anane, A., Awad, A., Back, C. H., Barman, A., Bauer, G. E. W., Becherer, M., Beginin, E. N., Bittencourt, V. A. S. V., Blanter, Y. M., Bortolotti, P., Boventer, I., Bozhko, D. A., Bunyaev, S. A., Carmiggelt, J. J., Cheenikundil, R. R., Ciubotaru, F., Cotofana, S., Csaba, G., Dobrovolskiy, O. V., Dubs, C., Elyasi, M., Fripp, K. G., Fulara, H., Golovchanskiy, I. A., Gonzalez-Ballestero, C., Graczyk, P., Grundler, D., Gruszecki, P., Gubbiotti, G., Guslienko, K., Haldar, A., Hamdioui, S., Hertel, R., Hillebrands, B., Hioki, T., Houshang, A., Hu, C. -M., Huebl, H., Huth, M., Iacocca, E., Jungfleisch, M. B., Kakazei, G. N., Khitun, A., Khymyn, R., Kikkawa, T., Kläui, M., Klein, O., Kłos, J. W., Knauer, S., Koraltan, S., Kostylev, M., Krawczyk, M., Krivorotov, I. N., Kruglyak, V. V., Lachance-Quirion, D., Ladak, S., Lebrun, R., Li, Y., Lindner, M., Macêdo, R., Mayr, S., Melkov, G. A., Mieszczak, S., Nakamura, Y., Nembach, H. T., Nikitin, A. A., Nikitov, S. A., Novosad, V., Otalora, J. A., Otani, Y., Papp, A., Pigeau, B., Pirro, P., Porod, W., Porrati, F., Qin, H., Rana, B., Reimann, T., Riente, F., Romero-Isart, O., Ross, A., Sadovnikov, A. V., Safin, A. R., Saitoh, E., Schmidt, G., Schultheiss, H., Schultheiss, K., Serga, A. A., Sharma, S., Shaw, J. M., Suess, D., Surzhenko, O., Szulc, K., Taniguchi, T., Urbánek, M., Usami, K., Ustinov, A. B., van der Sar, T., van Dijken, S., Vasyuchka, V. I., Verba, R., Kusminskiy, S. Viola, Wang, Q., Weides, M., Weiler, M., Wintz, S., Wolski, S. P., Zhang, X.
Publikováno v:
IEEE Transactions on Magnetics 58, 0800172 (2022)
Magnonics is a field of science that addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operations in the GHz-to-THz frequency range, utilization of nonlinear and nonreciproca
Externí odkaz:
http://arxiv.org/abs/2111.00365
We demonstrate the compositional effect on the magnetodynamic and auto-oscillations properties of Ni100-xFex/Pt (x= 10 to 40) nanoconstriction based spin Hall nano-oscillators. Using spin-torque ferromagnetic resonance (ST-FMR) performed on microstri
Externí odkaz:
http://arxiv.org/abs/2012.06121
Publikováno v:
Phys. Rev. Lett. 126, 037204 (2021)
Controlling the directionality of spin waves is a key ingredient in wave-based computing methods such as magnonics. In this paper, we demonstrate this particular aspect by using an all-optical point-like source of continuous spin waves based on frequ
Externí odkaz:
http://arxiv.org/abs/2006.08219
Publikováno v:
Phys. Rev. B 101, 224423 (2020)
We demonstrate sustained coherent emission of spin waves in NiFe films using rapid demagnetization from high repetition rate femtosecond laser pulse trains. As the pulse separation is shorter than the magnon decay time, magnons having a frequency equ
Externí odkaz:
http://arxiv.org/abs/1908.03388
Publikováno v:
Appl. Phys. Lett. 115, 152402 (2019)
We demonstrate field and current controlled magnetodynamics in nanocontact spin-torque nano-oscillators (STNOs) based on orthogonal magnetic tunnel junctions (MTJs). We systematically analyze the microwave properties (frequency $f$, linewidth $\Delta
Externí odkaz:
http://arxiv.org/abs/1907.10427