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. 2021 Nov 30;12:6970. doi: 10.1038/s41467-021-26482-7

Fig. 2. Quantum oscillations and negative longitudinal magnetoresistance (n-LMR) in the antiferromagnetic state of EuAs3.

Fig. 2

a Resistivity of EuAs3 single crystal in zero magnetic field. The inset shows the fit to the low-temperature data. b MR accompanied by distinct SdH oscillations. BM represents the critical magnetic field, which induces a magnetic transition from a collinear antiferromagnetic phase to a polarized ferromagnetic phase. c FFT results at various temperatures. The inset displays the oscillatory component ρxx below BM. Four bands, i.e., α, β, γ1, and γ2, can be distinguished. The latter two construct one electron sheet. d Landau index n plotted against 1/B for the SdH oscillations at 0.3 K. Lines represent linear fits. The right inset shows the extrapolation of 1/B to zero. The left inset shows the normalized FFT amplitude (Amp.nor) as a function of temperature, and the solid lines represent fits to the Lifshitz–Kosevich formula. e n-LMR measured with magnetic field parallel to the electric current I at various temperatures. f Longitudinal conductivity at various temperatures fit to the Adler–Bell–Jackiw chiral anomaly equation. The inset shows the emergence of a positive parameter originating from the chiral anomaly Cw, and error bar of the data is determined from fitting.