Anomalous low-temperature heat capacity in antiperovskite compounds

Guo Xin-Ge^{1, 2}, Lin Jian-Chao¹, Tong Peng^{1, †}, Lin Shuai¹, Yang Cheng¹, Lu Wen-Jian¹, Song Wen-Hai¹, Sun Yu-Ping^{1, 3, 4}

(color online) A comparison of specific heat plot of (C − γT)/T ³ versus T for GaCMn₃ and GaNMn₃ between in zero field and under high magnetic field (50 kOe or 80 kOe).