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Simulations of magnetization reversal in FM/AFM bilayers with THz frequency pulses (2023)
Journal Article
Hirst, J., Ruta, S., Jackson, J., & Ostler, T. (2023). Simulations of magnetization reversal in FM/AFM bilayers with THz frequency pulses. Scientific reports, 13(1), Article 12270. https://doi.org/10.1038/s41598-023-39175-6

It is widely known that antiferromagnets (AFMs) display a high frequency response in the terahertz (THz) range, which opens up the possibility for ultrafast control of their magnetization for next generation data storage and processing applications.... Read More about Simulations of magnetization reversal in FM/AFM bilayers with THz frequency pulses.

Three-dimensional topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice (2023)
Journal Article
Rana, A., Liao, C.-T., Iacocca, E., Zou, J., Pham, M., Lu, X., Cating Subramanian, E.-E., Hung Lo, Y., Ryan, S. A., Bevis, C. S., Karl Jr, R. M., Glaid, A. J., Rable, J., Mahale, P., Hirst, J., Ostler, T., Liu, W., O’Leary, C. M., Yu, Y.-S., Bustillo, K., …Miao, J. (2023). Three-dimensional topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice. Nature nanotechnology, 18, 227–232. https://doi.org/10.1038/s41565-022-01311-0

Topological magnetic monopoles (TMMs), also known as hedgehogs or Bloch points, are three-dimensional (3D) nonlocal spin textures that are robust to thermal and quantum fluctuations due to the topology protection1-4. Although TMMs have been observed... Read More about Three-dimensional topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice.

Timescales and contribution of heating and helicity effect in helicity-dependent all-optical switching (2022)
Journal Article
Li, G.-Q., Zheng, X.-Y., Wang, J.-L., Lu, X.-Y., Wu, J., Cai, J.-W., Meng, H., Liu, B., Ostler, T. A., & Xu, Y.-B. (2023). Timescales and contribution of heating and helicity effect in helicity-dependent all-optical switching. Rare Metals, 42(1), 234-243. https://doi.org/10.1007/s12598-022-02117-8

The heating and helicity effects induced by circularly polarized laser excitation are entangled in the helicity-dependent all-optical switching (HD-AOS), which hinders understanding the magnetization dynamics involved. Here, applying a dual-pump lase... Read More about Timescales and contribution of heating and helicity effect in helicity-dependent all-optical switching.