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MA: Fachverband Magnetismus
MA 24: Terahertz Spintronics I
MA 24.12: Vortrag
Mittwoch, 20. März 2024, 12:30–12:45, EB 202
Theoretical analysis of the terahertz radiation spin-based sensors design — •Ievgeniia Korniienko1, Pablo Nieves1,2, Oksana Chubykalo-Fesenko3, and Dominik Legut1 — 1IT4Innovations, VSB-TU Ostrava, Ostrava, Czech Republic — 2University of Oviedo, Oviedo, Spain — 3Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Madrid, Spain
In recent years, there has been an increased interest in terahertz (THz) radiation, which is caused on the one hand by the success in creating THz emitters [1], and on the other hand by the potential applications of radiation in this range [2]. Although there is a wide variety of THz detectors they all show sensitivity to the electrical component of THz electromagnetic radiation [3]. THz magnetic field directly couples to the spins by the Zeeman interaction making it possible to detect THz radiation by magnetic dynamics observation. In our work, we theoretically analyze the possibilities to create spin-based detectors that would be sensitive to the magnetic component of THz radiation [4]. We explore the potential capabilities of such sensors, their application limits, and also provide an analysis of potential candidates among ferromagnetic materials. The obtained theoretical dependencies can be useful to reduce the impact of measurement inaccuracies and noises on the THz signal.
[1] T. Seifert, et al.: Nature Photonics 10, 483 (2016). [2] A. Y. Pawar, et al.: Drug Invention Today 5, 157 (2013). [3] S. S. Dhillon, et al.: Journal of Physics D: Applied Physics 50, 043001 (2017). [4] I. Korniienko, et al.: Phys. Rev. Applied (under review).
Keywords: Zeeman torque; spin-based sensors; terahertz pulse detection