All-optical switching in Ho-Fe-Co nanostructures

Surya Narain Dikshit; Shipra Saini; Arshid Nisar; Brajesh Kumar Kaushik

doi:10.1117/12.2649898

15 March 2023 All-optical switching in Ho-Fe-Co nanostructures

Surya Narain Dikshit, Shipra Saini, Arshid Nisar, Brajesh Kumar Kaushik

Proceedings Volume 12430, Quantum Sensing and Nano Electronics and Photonics XIX; 1243017 (2023) https://doi.org/10.1117/12.2649898
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

Spintronics has attracted considerable interest for next-generation nano-devices because of their low power consumption, unlimited endurance, and non-volatility. Although spin-transfer-torque and spin-orbit-torque are widely used magnetization switching mechanisms, they are still limited by high power consumption and low switching speed. On the other hand, optically assisted magnetization switching using ultrashort laser pulses is able to achieve sub-picosecond switching operation. However, ferromagnetic materials require multiple laser pulses to switch their magnetization, that leads to higher energy consumption as compared to ferrimagnetic materials. In this paper, optically assisted magnetization dynamics in Ho-Fe-Co ferromagnetic nanostructure has been investigated using atomistic spin and monte carlo simulations. Ho has a relatively high magnetic moment and enhances magnetic anisotropy in Ho-Fe-Co nanostructure to achieve single shot and energy-efficient magnetization switching at room temperature.

Citation Download Citation

Surya Narain Dikshit, Shipra Saini, Arshid Nisar, and Brajesh Kumar Kaushik "All-optical switching in Ho-Fe-Co nanostructures", Proc. SPIE 12430, Quantum Sensing and Nano Electronics and Photonics XIX, 1243017 (15 March 2023); https://doi.org/10.1117/12.2649898

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