Fig. 4: Magnetostriction ΔL(T)/L0 as a function of the magnetic field. | Nature Communications

Fig. 4: Magnetostriction ΔL(T)/L0 as a function of the magnetic field.

From: Z3-vestigial nematic order due to superconducting fluctuations in the doped topological insulators NbxBi2Se3 and CuxBi2Se3

Fig. 4

The data (Sample 1) was measured along the 155° direction at a fixed temperature of 350 mK. The crystalline distortion is removed at Hnem = 1 T, well above the resistively determined Hc2, which coincides with the kink at 0.7 T for this field orientation (marked as Hc2). The magnetic field was applied parallel to the measured sample direction. A weak linear normal state background was subtracted for clarity. The inset shows the magnetic phase diagram.

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