I am making an MoS2 lattice but can add hoppings here is the error. """ ValueError: <Monatomic lattice 0> and <Monatomic lattice 1> are not compatible with delta=[0 0] """ here is my code. a0 = 3.15 graphene = kwant.lattice.general ([(a0*1, 0, 0),(a0*np.sin(np.pi/6),a0*np.cos(np.pi/6), 0), (0, 0, 12.5)], [(0, 0, 0),(0, a0*(1/sqrt(3)), 12.5)]) a, b = graphene.sublattices def ribbona(pos): x,y, z = pos return (0<=x<=10 and 0<= y <=10 and 0<= z <= 1) def ribbonb(pos): x,y, z = pos return (0<=x<=10 and 0<= y <=10 and 10< z <= 13) def ribbonc(pos): x,y, z = pos return (0<=x<=10 and 0<= y <=10 and 24< z <= 26) syst = kwant.Builder() syst[b.shape(ribbona,(0,0, 0))] = 0 syst[a.shape(ribbonb,(0,0, 12))] = 0 syst[b.shape(ribbonc,(0,0, 25))] = 0 %matplotlib qt hoppings = (((0,0),a,b),((0,1),a,b)) syst[[kwant.builder.HoppingKind(*hopping) for hopping in hoppings]] = -1 syst[a.neighbors()] = -1 syst[b.neighbors()] = -1 kwant.plotter.plot(syst, fig_size = (10, 10), site_size=0.18, site_lw=0.01, hop_lw=0.05);