Direct phase probing and mapping via spintronic Michelson interferometry.
A spintronic approach is introduced to transform classic Michelson interferometry that probes the electromagnetic phase only. This method utilizes a nonlinear four-wave coherent mixing effect. A previously unknown striking relation between spin dynamics and the relative phase of electromagnetic waves is revealed. Spintronic Michelson interferometry allows direct probing of both the spin-resonance phase and the relative phase of electromagnetic waves via microspintronics. Thereby, it breaks new ground for cross-disciplinary applications with unprecedented capabilities, which we demonstrate via a powerful phase-resolved spin-resonance spectroscopy on magnetic materials and an on-chip technique for phase-resolved near-field microwave imaging.
Wirthmann
A
A
Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
Fan
Xiaolong
X
Gui
Y S
YS
Martens
K
K
Williams
G
G
Dietrich
J
J
Bridges
G E
GE
Hu
C-M
CM