Electronic excitations and structure of Li{sub 2}IrO{sub 3} thin films grown on ZrO{sub 2}:Y (001) substrates

Journal Article · Wed Jan 14 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4905790· OSTI ID:22412845

Jenderka, Marcus; Schmidt-Grund, Rüdiger; Grundmann, Marius; Lorenz, Michael ^[1]

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1. Institut für Experimentelle Physik II, Universität Leipzig Linnéstraße 5, D-04103 Leipzig (Germany)

Thin films are a prerequisite for application of the emergent exotic ground states in iridates that result from the interplay of strong spin-orbit coupling and electronic correlations. We report on pulsed laser deposition of Li{sub 2}IrO{sub 3} films on ZrO{sub 2}:Y (001) single crystalline substrates. X-ray diffraction confirms preferential (001) and (10-1) out-of-plane crystalline orientations with well defined in-plane orientation. Resistivity between 35 and 300 K is dominated by a three-dimensional variable range hopping mechanism. The dielectric function is determined by means of spectroscopic ellipsometry and, complemented by Fourier transform infrared transmission spectroscopy, reveals a small optical gap of ≈300 meV, a splitting of the 5d-t{sub 2g} manifold, and several in-gap excitations attributed to phonons and possibly magnons.

• OSTI ID: 22412845
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIELECTRIC MATERIALS
ELECTRIC CONDUCTIVITY
ELLIPSOMETRY
ENERGY BEAM DEPOSITION
EXCITATION
FOURIER TRANSFORMATION
GROUND STATES
INFRARED SPECTRA
IRIDIUM OXIDES
LITHIUM COMPOUNDS
L-S COUPLING
MAGNONS
MONOCRYSTALS
PHONONS
PULSED IRRADIATION
TEMPERATURE DEPENDENCE
THIN FILMS
THREE-DIMENSIONAL LATTICES
X-RAY DIFFRACTION
ZIRCONIUM OXIDES