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Optical Properties of Highly Conductive SrMoO₃ Oxide Thin Films in the THz Band and Beyond

Regensburger, Stefan ; Mohammadi, Mahdad ; Khawaja, Arslan A. ; Radetinac, Aldin ; Komissinskiy, Philipp ; Alff, Lambert ; Preu, Sascha (2022):
Optical Properties of Highly Conductive SrMoO₃ Oxide Thin Films in the THz Band and Beyond. (Publisher's Version)
In: Journal of Infrared, Millimeter, and Terahertz Waves, 41 (10), pp. 1170-1180. Springer Nature, ISSN 1866-6892,
DOI: 10.26083/tuprints-00020610,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Optical Properties of Highly Conductive SrMoO₃ Oxide Thin Films in the THz Band and Beyond
Language: English
Abstract:

Strontium molybdate (SrMoO₃) thin films are grown epitaxially by pulsed laser deposition onto gadolinium scandate (GdScO₃) substrates and characterized in the terahertz (THz) and visible part of the electromagnetic spectrum. X-ray diffraction measurements prove a high crystallinity and phase-pure growth of the thin films. The high-quality SrMoO₃ thin films feature a room temperature DC conductivity of around 3 1/μΩm. SrMoO₃ is characterized in the THz frequency range by time domain spectroscopy. The resulting AC conductivity is in excellent agreement with the DC value. A Lorentz-Drude oscillator approach models the THz and visible conductivity of SrMoO₃ very well. We compare the results of the SrMoO₃ thin films to a standard, sputtered gold film, with a resulting THz conductivity of 8 1/μΩm. The comparison demonstrates that oxide thin film–based devices can play an important role in future THz technology.

Journal or Publication Title: Journal of Infrared, Millimeter, and Terahertz Waves
Volume of the journal: 41
Issue Number: 10
Publisher: Springer Nature
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems
TU-Projects: DFG|KO4093/1-4|Grenzflächeneinstell
Date Deposited: 18 Feb 2022 13:18
Last Modified: 18 Feb 2022 13:18
DOI: 10.26083/tuprints-00020610
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-206108
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20610
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