Figure 4

Resistivity versus field (ρ-H) curve for the Sr₂CoO₄ at 2 K with a field sweep rate of 25 Oe/s.

The inset (a) shows ρ-H curves for the Sr₂CoO₄ sample at different temperatures with the same field sweep rate of 25 Oe/s. The inset (b) shows ρ-H curves for the Sr₂CoO₄ sample at 2 K with different magnetic field sweep rates.