Charge pumping driven by the laser-induced dynamics of the exchange splitting
Freimuth F, Bluegel S, Mokrousov Y (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 95
Article Number: 094434
Journal Issue: 9
DOI: 10.1103/PhysRevB.95.094434
Abstract
We show that electric currents are induced in inversion asymmetric ferromagnets if the exchange splitting varies in time after excitation by laser pulses. We interpret this phenomenon as the magnetic variant of the inverse Edelstein effect. Based on ab initio calculations we determine the size of this effect in Co/Pt(111) and Mn/W(001) magnetic bilayer systems and investigate its dependence on the magnetization direction. The comparison of our theoretical results to experiments measuring the THz signal emitted after laser excitation suggests that ultrafast demagnetization in 3d transition metal ferromagnets is dominated by transverse spin fluctuations rather than by a reduction of the exchange splitting.
Involved external institutions
Germany (DE)How to cite
APA:
Freimuth, F., Bluegel, S., & Mokrousov, Y. (2017). Charge pumping driven by the laser-induced dynamics of the exchange splitting. Physical Review B, 95(9). https://doi.org/10.1103/PhysRevB.95.094434
MLA:
Freimuth, Frank, Stefan Bluegel, and Yuriy Mokrousov. "Charge pumping driven by the laser-induced dynamics of the exchange splitting." Physical Review B 95.9 (2017).
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