Fig. 2: Magnetic and transport properties of AuSn4. | Communications Materials

Fig. 2: Magnetic and transport properties of AuSn4.

From: Two-dimensional superconductivity and magnetotransport from topological surface states in AuSn4 semimetal

Fig. 2

a ZFC and FC magnetizations in H = 5 Oe parallel to the crystal c-axis for an AuSn4 single crystal. b Magnetization M(H) curves of AuSn4 at various temperatures in out-of-plane fields. c Obtained Hc1 as a function of reduced temperature (T/Tc)4 for AuSn4 with a solid line showing fit to the data. d Low-temperature heat capacity Cp/T vs. T2 with the red line showing the linear fit in the temperature range of 2.5–3.0 K and the equal-area approximation for the Tc determination. e The excess specific heat ΔCp/T of superconductivity by subtracting a smooth normal-state background as represented by the red dashed line. f Whole temperature range of resistivity for AuSn4. The inset shows ρ(T) in zero field at temperatures near Tc.

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