Fig. 4: Transport behavior and optical conductivity of strained RP nickelate films.
From: Strain-mediated phase crossover in Ruddlesden–Popper nickelates
a ρ-T curves of strained RP nickelate films. The resistivity minimum of ρ-T curves was marked as “▼”. b Metal-to-insulator transition temperature (TMI) and c room temperature resistivity (ρ300K) as a function of misfit strain. Optical conductivity of d tensile strained and e compressively strained RP nickelate films, obtained from spectroscopic ellipsometry at room temperature. Insets show the schematics of band structures. (f) The peak position (\(h{\omega }_{\max }\)) at the optical conductivity maximum as a function of misfit strain.
