Fig. 1: Tunnel diode oscillation (TDO) frequency and ac susceptibility. | npj Quantum Materials

Fig. 1: Tunnel diode oscillation (TDO) frequency and ac susceptibility.

From: Phase diagram of YbZnGaO4 in applied magnetic field

Fig. 1

a TDO (Δf/f ∝ ΔM/ΔH) shows an anomaly for H∥c, which weakens as temperature increases b The anomaly shows anisotropic response in applied field, and is more pronounced for H∥c (curves offset for clarity in b). c M(H) measured with SQUID corroborates TDO measurement when Δf is integrated with respect to field. d,e dM/dH from SQUID compares very favorably with TDO signal. f Frequency-dependent cusps measured with low-temperature ac susceptibility. g Comparison of critical temperatures measured in this work for YbZnGaO4 to earlier measurements by Ma et al.32.

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