Table 1.

Summary of the wave pinning (WP) regimes identified in Fig. 4 and 5

Regime	Classification	Description
I	Stable	One stable GB, no LB
II	Polarizable	One stable GB, one stable LB located above the GB
III	Polarizable	One stable GB, three stable LBs located on both sides of the GB
IV	Polarizable	Two stable GBs, three stable LBs: one above both GBs, one in between, and one below both GBs
V	Polarizable	One stable GB, one stable LB located below the GB
VI	Unstable	The only GB is unstable, two stable LBs located on both sides of the GB
VII	Unstable	Three GBs, all unstable, four stable LBs located on both sides of the GB

GB global branch, LB local branch, Stable all stable branches are global branches, Polarizable there exist both stable global and local branches, Unstable all global branches are unstable, so some local branches have to be stable