Fig. 1: Sketch of the open cavity magnonic system.
From: Cooperative-effect-induced one-way steering in open cavity magnonics

a The yttrium-iron-garnet (YIG) sphere is placed inside a cross-line cavity which supports both standing wave and traveling wave. The entire experimental device is placed inside a uniform magnetic field, at the same time in the 20 mK temperature environment. b Both the cavity and the YIG sphere are coupled to the same dissipative environment. c The magnetic field strength and magnetic field distribution of the standing wave cavity. d The dissipative coupling strength can be adjusted by changing the distance between the YIG sphere and the cross-line circuit. The traveling wave is represented by a black line.