Spin pumping as a generic probe for linear spin fluctuations: demonstration with ferromagnetic and antiferromagnetic orders, metallic and insulating electrical states.

Autor: Olga Gladii, Lamprini Frangou, Guillaume Forestier, Rafael Lopes Seeger, Stéphane Auffret, Miguel Rubio-Roy, Raphael Weil, Alexandra Mougin, Christelle Gomez, Walaa Jahjah, Jean-Philippe Jay, David Dekadjevi, David Spenato, Serge Gambarelli, Vincent Baltz
Zdroj: Applied Physics Express; Feb2019, Vol. 12 Issue 2, p1-1, 1p
Abstrakt: We investigated spin injection by spin pumping from a spin-injector(NiFe) into a spin-sink to detect spin fluctuations in the spin-sink. By scanning the ordering-temperature of several magnetic transitions, we found that enhanced spin pumping due to spin fluctuations applies with several ordering states: ferromagnetic (Tb) and antiferromagnetic (NiO, NiFeOx, BiFeO3, exchange-biased and unbiased IrMn). Results also represent systematic experimental investigation supporting that the effect is independent of the metallic and insulating nature of the spin-sink, and is observed whether the spin current probe involves electronic or magnonic transport, facilitating advances in material characterization and engineering for spintronic applications. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index