Registration Number
0224U001561,
(0121U109049)
, R & D reports
Title
Магнітоплазмонні наноструктури для застосування в галузях біосенсорики і нанофотоніки
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Розробка і дослідження елементів біосенсорики і магнітофотоніки з керованими властивостями на основі розроблених наноструктур.
Head
Kravets Anatolii F., Доктор фізико-математичних наук
Registration Date
25-01-2024
Organization
Institute of Magnetism NAS of Ukraine and MES of Ukraine
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The aim of the work is to develop the lattices of nanodots and nanocombs of magnetoplasmon nanostructures based on magnetic and nonmagnetic noble high-plasmon metals with a giant enhancement of the magneto-optical response.
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The nonlinear spin dynamics in thin single-crystal films of the metal collinear antiferromagnet Mn2Au, which was excited by single electromagnetic pulses in the terahertz range with phase synchronization, was experimentally and theoretically investigated and monitored by the probe method using ultrafast femtosecond magneto-optics. Magneto-optical response signals whose symmetry, dynamics, scaling of the terahertz field, and dependence on the sample structure are fully consistent with a uniform antiferromagnetic magnon in the plane of the film driven by a terahertz spin-orbit Néel moment. Upon excitation of the antiferromagnet by pulses of terahertz radiation with an electric field strength of more than 500 kV cm-1, clearly expressed nonlinear spin dynamics with a giant deviation of the Néel vector by almost 30° was revealed. These data are consistent with the developed micromagnetic model. The obtained results indicate the possibility of fully coherent high-speed switching of the Néel vector of thin films of the metal collinear antiferromagnet Mn2Au by 90° within 1 ps using the terahertz Néel spin-orbit moment.
Product Description
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Vladyslav Y. Borynskiy
Zamorskyi Vladyslav
Lytvynenko Yaryna M.
Nevdacha Vitaliy V.
Pohorilyi Anatolii M.
Polischuk Dmytro M.
Tovstolytkin Oleksandr І.
Yaremkevich Dmеtro D
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2024-01-25
