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Optical probe of strong correlations in LaNiO3 thin films
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) x-ray scan for the 200 nm film on STO.

Image of FIG. 2.
FIG. 2.

(Color online) Raw reflectance (top panel) and 60° ellipsometry (bottom panel) data for the 100 nm film on STO plotted with the fit from the model (red line).

Image of FIG. 3.
FIG. 3.

(Color online) DC resistivity of the LNO films over a wide temperature range.

Image of FIG. 4.
FIG. 4.

(Color online) Real part of the optical conductivity of three different LNO films at room temperature. Note the change in scale at 600 cm−1. Inset: rough sketch of the LNO density of states and interband transitions.

Image of FIG. 5.
FIG. 5.

(Color online) Partial LNO density of states obtained from LDA theory. Inset: comparison of the optical conductivity obtained experimentally for the 200 nm film of LNO on STO and that obtained from LDA calculations. The Drude peak produced by LDA theory is not present in the experimental data.

Image of FIG. 6.
FIG. 6.

(Color online) Low temperature optical conductivity of the 100 nm thick film on STO in the far-IR and mid-IR regions. Inset: optical conductivity of the 200 nm film on STO up to 6 eV at 298 and 20 K.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical probe of strong correlations in LaNiO3 thin films