Figure 1 | Scientific Reports

Figure 1

From: Antiferromagnetic Spin Wave Field-Effect Transistor

Figure 1

Degenerate spin wave modes in a collinear antiferromagnet with easy-axis anisotropy.

Red and blue arrows represent the two sublattice spins SA and SB in a unit cell, with the easy-axis. (a) and (b) The two circularly polarized modes are characterized by left-handed and right-handed precessions around the easy-axis; they also have slightly different ratios between the cone angles of SA and SB. (c) and (d) The linearly polarized modes consist of different combinations of the circular modes. While SA (SB) is individually traveling counterclockwise (clockwise) on an elliptical orbit, the staggered field n = (SA − SB)/2S exhibits purely linear oscillation.

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