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Information × Registration Number 0224U001561, 0121U109049 , R & D reports Title Магнітоплазмонні наноструктури для застосування в галузях біосенсорики і нанофотоніки popup.stage_title Head Kravets Anatolii F., Доктор фізико-математичних наук Registration Date 25-01-2024 Organization Institute of Magnetism NAS of Ukraine and MES of Ukraine popup.description2  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 popup.authors Vladyslav Y. Borynskiy Zamorskyi Vladyslav Lytvynenko Yaryna M. Nevdacha Vitaliy V. Pohorilyi Anatolii M. Polischuk Dmytro M. Tovstolytkin Oleksandr І. Yaremkevich Dmеtro D popup.nrat_date 2024-01-25 Close