Optical properties of the antiferromagnetic Heusler alloy Ru2CrGe. (December 2021)

• Record Type: Journal Article
• Authors: Kanomata, T.; Awano, T.; Eto, T.
• Is Part Of: Solid state communications. Volume 340(2021)
• Publication Date: 2021-12
• Subjects: A. Optical spectra -- B. Semiconductor -- C. Antiferromagnet -- D. Heusler alloy -- E. Ru2CrGe; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2021.114525
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: The results of optical measurements in the long wavelength infra-red (IR) range on the antiferromagnetic Heusler alloy Ru2 CrGe with a Néel temperature of 13 K are reported. At 9 K there is absence of a Drude component in the absorption coefficient indicating the insulating nature of Ru2 CrGe at this temperature. The absorption coefficient was observed to increase steeply around 50–70 cm −1 at all temperatures measured in this study. Highlights: Optical spectroscopy measurements of the antiferromagnetic full Heusler alloy Ru2 CrGe. Insulating behavior at 9 K of Ru2 CrGe. The absence of a Drude component in the absorption coefficient. Narrow-gap semiconductor Ru2 CrGe. Exchange interaction mechanism for the insulating Heusler alloys Ru2 CrGe and Ru2 CrSi.