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

Abstract

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.

Authors:
; ; ;  [1]
  1. Institut für Experimentelle Physik II, Universität Leipzig Linnéstraße 5, D-04103 Leipzig (Germany)
Publication Date:
OSTI Identifier:
22412845
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Jenderka, Marcus, E-mail: marcus.jenderka@physik.uni-leipzig.de, Schmidt-Grund, Rüdiger, Grundmann, Marius, and Lorenz, Michael. Electronic excitations and structure of Li{sub 2}IrO{sub 3} thin films grown on ZrO{sub 2}:Y (001) substrates. United States: N. p., 2015. Web. doi:10.1063/1.4905790.
Jenderka, Marcus, E-mail: marcus.jenderka@physik.uni-leipzig.de, Schmidt-Grund, Rüdiger, Grundmann, Marius, & Lorenz, Michael. Electronic excitations and structure of Li{sub 2}IrO{sub 3} thin films grown on ZrO{sub 2}:Y (001) substrates. United States. doi:10.1063/1.4905790.
Jenderka, Marcus, E-mail: marcus.jenderka@physik.uni-leipzig.de, Schmidt-Grund, Rüdiger, Grundmann, Marius, and Lorenz, Michael. Wed . "Electronic excitations and structure of Li{sub 2}IrO{sub 3} thin films grown on ZrO{sub 2}:Y (001) substrates". United States. doi:10.1063/1.4905790.
@article{osti_22412845,
title = {Electronic excitations and structure of Li{sub 2}IrO{sub 3} thin films grown on ZrO{sub 2}:Y (001) substrates},
author = {Jenderka, Marcus, E-mail: marcus.jenderka@physik.uni-leipzig.de and Schmidt-Grund, Rüdiger and Grundmann, Marius and Lorenz, Michael},
abstractNote = {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.},
doi = {10.1063/1.4905790},
journal = {Journal of Applied Physics},
number = 2,
volume = 117,
place = {United States},
year = {Wed Jan 14 00:00:00 EST 2015},
month = {Wed Jan 14 00:00:00 EST 2015}
}