TO(<b>Γ</b>) mode resonances in the rare-earth nitrides-Reference-Cited by-同舟云学术

TO(Γ) mode resonances in the rare-earth nitrides

Published:2022-07-01 Issue:7 Volume:12 Page:075120
ISSN:2158-3226
Container-title:AIP Advances
language:en
Short-container-title:AIP Advances

Author:

Holmes-Hewett W. F.¹^ORCID,Buckley R. G.²^ORCID,Butler T. J.²^ORCID,Pot C.¹^ORCID,Van Koughnet K.¹^ORCID,Ruck B. J.¹^ORCID,Trodahl H. J.³^ORCID

Affiliation:

1. The MacDiarmid Institute for Advanced Materials and Nanotechnology and The School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand

2. The MacDiarmid Institute for Advanced Materials and Nanotechnology and The Robinson Research Institute, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand

3. The School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand

Abstract

Far infrared measurements of the absorption into the IR-active TO(Γ) mode are reported for a selection of the rare-earth mononitrides. The frequencies harden as anticipated by ≈15% as the lattice constant shrinks by ≈6% from SmN to LuN, though they are typically ∼25% softer than the LSDA+ U prediction published a decade ago. The data are in much closer agreement with our computation based on more recent software for two in the series: GdN and LuN. The resonances show surprisingly heavy damping, diminishing from the lighter to heavier rare earth elements.

Funder

New Zealand Endeavor Fund

Publisher

AIP Publishing

Subject

General Physics and Astronomy

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0098290

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