Fig. 2: Imaging the magnetic contrast at TCOI.
From: Imaging the formation and surface phase separation of the CE phase
The magnetic images are taken on a rough region while the sample is cooled down from room temperature to 183 K (a–h) and then warmed up to 230 K (i–p) in a field of 9 T. The arrows indicate the imaging sequence. q shows the temperature dependence of resistivity in 9 T (solid lines) and the area ratio of the charge-ordering insulating (COI) phase (open squares) extracted from the MFM images. Scale bar in a: 2 μm. MFM image size: 11.8 × 11.8 μm2. The contrast is ~0.5 Hz for all the images.
