Ultrafast optically induced ferromagnetic state in an elemental antiferromagnet

Autor:	Golias, E., Kumberg, I., Gelen, I., Thakur, S., Gördes, J., Hosseinifar, R., Guillet, Q., Dewhurst, J. K., Sharma, S., Schüßler-Langeheine, C., Pontius, N., Kuch, W.
Rok vydání:	2020
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Phys. Rev. Lett. 126, 107202 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.126.107202
Popis:	We present evidence for an ultrafast optically induced ferromagnetic alignment of antiferromagnetic Mn in Co/Mn multilayers. We observe the transient ferromagnetic signal at the arrival of the pump pulse at the Mn L$_3$ resonance using x-ray magnetic circular dichroism in reflectivity. The timescale of the effect is comparable to the duration of the excitation and occurs before the magnetization in Co is quenched. Theoretical calculations point to the imbalanced population of Mn unoccupied states caused by the Co interface for the emergence of this transient ferromagnetic state. Comment: 6 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.16061 Zobrazit plný text záznamu View this record from Arxiv