Fig. 2: Band structure and distribution of the trajectories of the ZB motions projected to the x−y plane in the momentum space (kx, ky) near the K point.
From: Photonic Hall effect and helical Zitterbewegung in a synthetic Weyl system
a–d Band structures with parameter η equal to −0.3, 0, 0.3 and 0.6, respectively. e–h Corresponding distributions of the trajectories of the ZB motions. The ellipse (circle) denoted by +(−) means the trajectory of the ZB is a counter-clockwise (clockwise) ellipse (circle) along the propagation direction. The geometric sizes of the line, ellipses and circles represent the relative amplitudes of the ZB with different [kx, ky, η]
