Supplementary Information
Continuously tunable temperature coefficient of resistivity in antiperovskite
compounds AgN1-xCxMn3 (0≤x≤0.15)
J. C. Lin,1 P. Tong,1,a) S. Lin,1 B. S. Wang,1 W. H. Song,1and Y P Sun1,2,3,b)
1
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of
Sciences, Hefei 230031, People’s Republic of China
2
High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People’s
Republic of China
3
University of Science and Technology of China, Hefei 230026, People’s Republic of China
a) E-mail: tongpeng@issp.ac.cn
b) E-mail: ypsun@issp.ac.cn
Fig. S1. X-ray diffraction patterns measured at room temperature for AgN1-xCxMn3 with
0≤x≤0.15
Fig. S2. Temperature dependent magnetization M(T) of AgN1-xCxNMn3 with x=0 (a), 0.07 (b) and
0.15 (c) at 100 Oe under both zero-field-cooled (ZFC) and field-cooled (FC) modes. The curves
near antiferromagnetic transition are enlarged as in the insets. The data was collected on a
commercial Quantum Design superconducting quantum interference device (SQUID)
magnetometer. Two magnetic transitions can be seen in all samples, an antiferromagnetic
transition at TN and a glassy-like transition at Tg.
Fig. S3. The optical absorption spectrum for AgN1-xCxMn3 (x=0, 0.03, 0.07, 0.1, and 0.15) under
the wavelength range between 220 nm (5.64 eV) and 2400 nm (0.52 eV) using a UV-Vis-NIR
spectrophotometer (CARY-5E). No absorption edge appears in the whole wavelength range
investigated. The peak-like feature around 878 nm is from the instrument itself.