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 2. From T = 0.01 to 0.05, Güneisen ratio as a function of δ for (a) D = 0 and (c) D = 0.25; the inset in (a) is the inverse of Güneisen ratio as a function of δ at the lowest temperature. (e) Güneisen ratio as a function of D for δ=0.5, the inverse of Güneisen ratio as a function of (D-Dc) is plotted in the inset at the lowest temperature. The temperature dependence of critical Güneisen ratio for (b) D = 0, (d) D = 0.25 and (f) δ=0.5.