(a) The energy spectrum of the gapped phase, with [ J x = 10 , J y = 10 , J x = 40 ], and frequency ratio, ω x : ω y = 1 : 100 . (b) The Fourier knot of current in momentum space in gapped phase. (c) The knot of normalized current in momentum space of gapped phase with the same parameters as panels (a) and (b). (d) The energy spectrum of the gapless phase, with [ J x = 40 , J y = 10 , J x = 40 ], and frequency ratio, ω x : ω y = 1 : 100 . (e) The Fourier knot of current in momentum space of gapless phase. (f) The knot of normalized current in gapless phase with the same parameters as panels (d) and (e).