Grüneisen ratio quest for self-duality of quantum criticality in a spin-1/2 XY chain with Dzyaloshinskii-Moriya interaction

Lin-Jie Ding(丁林杰),Yuan Zhong(钟园)

Figure 4. For δ = 0.5, (a) D-h phase diagram; the field dependence of (b) entropy and (c) correlation function with different DM interactions; (d) the correlation function as a function of D under different fields; the inset in (b) is the D dependence of entropy, while the inset in (c) is the first derivative of correlation function.