Indirect optical manipulation of the antiferromagnetic order of insulating NiO by ultrafast interfacial energy transfer

Autor:	Wust, Stephan, Seibel, Christopher, Meer, Hendrik, Herrgen, Paul, Schmitt, Christin, Baldrati, Lorenzo, Ramos, Rafael, Kikkawa, Takashi, Saitoh, Eiji, Gomonay, Olena, Sinova, Jairo, Mokrousov, Yuriy, Schneider, Hans Christian, Kläui, Mathias, Rethfeld, Baerbel, Stadtmüller, Benjamin, Aeschlimann, Martin
Rok vydání:	2022
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	We report the ultrafast, (sub)picosecond reduction of the antiferromagnetic order of the insulating NiO thin film in a Pt/NiO bilayer. This reduction of the antiferromagnetic order is not present in pure NiO thin films after a strong optical excitation. This ultrafast phenomenon is attributed to an ultrafast and highly efficient energy transfer from the optically excited electron system of the Pt layer into the NiO spin system. We propose that this energy transfer is mediated by a stochastic exchange scattering of hot Pt electrons at the Pt/NiO interface. Comment: 12 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2205.02686 Zobrazit plný text záznamu View this record from Arxiv