Coherent ac spin current transmission across an antiferromagnetic CoO insulator

Authors :: Q. Li
M. Yang
C. Klewe
P. Shafer
A. T. N’Diaye
D. Hou
T. Y. Wang
N. Gao
E. Saitoh
C. Hwang
R. J. Hicken
J. Li
E. Arenholz
Z. Q. Qiu
Source :: Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Publication Year :: 2019
Publisher :: Nature Portfolio, 2019.
Abstract: The mechanism underpinning the frequency mismatch between THz magnons and the GHz spin currents observed in antiferromagnetic insulators remains unknown. Here, the authors demonstrate that, in a Py/Ag/CoO/Ag/Fe75Co25/MgO(001) heterostructure, a GHz spin current transmits coherently across the antiferromagnetic CoO insulating layer to drive a coherent spin precession of the ferromagnetic Fe75Co25 layer.

Full Text Access

Tools