At the NdNiO2/SrTiO3 interface, strontium intermixing hole-dopes both oxygen and nickel states, and 2.6% epitaxial strain redshifts the highest-energy optical phonon.
S1 Schematic diagrams of the interface polarization
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Electron microscopy and spectroscopy investigation of atomic, electronic, and phonon structures of NdNiO2/SrTiO3 interface
At the NdNiO2/SrTiO3 interface, strontium intermixing hole-dopes both oxygen and nickel states, and 2.6% epitaxial strain redshifts the highest-energy optical phonon.