Extended Data Fig. 6: STEM-HAADF and integrated differential phase contrast (iDPC) measurements of La4Ni3O10-δ crystals.
From: Superconductivity in pressurized trilayer La4Ni3O10−δ single crystals
a, The cleavage plane of a La4Ni3O10-δ single crystal. b, The STEM-HAADF image of a La4Ni3O10-δ crystal along the [110] direction on the scale of 5 nm. c, Atomic EDX mapping results and STEM-HAADF image in the same region. d, The STEM-HAADF image of La4Ni3O10-δ sample along the [110] direction on the scale of 2 nm. e, iDPC result in the same region and f, an enlarged view of the iDPC image. The oxygen atoms are clearly revealed through the iDPC imaging, aligning well with the crystal structure of La4Ni3O10-δ determined by neutron diffraction and XRD measurements.
