Electronic transparency of internal interfaces in metallic nanostructures comprising light, heavy and ferromagnetic metals measured by terahertz spectroscopy-Reference-Cited by-同舟云学术

Electronic transparency of internal interfaces in metallic nanostructures comprising light, heavy and ferromagnetic metals measured by terahertz spectroscopy

Published:2024-01-15 Issue:10 Volume:13 Page:1883-1890
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Beermann Nicolas S.¹,Fabretti Savio¹,Hafez Hassan A.¹,Syskaki Maria-Andromachi²,Kononenko Iryna²,Jakob Gerhard²,Kläui Mathias²,Turchinovich Dmitry¹^ORCID

Affiliation:

1. Fakultät für Physik , Universität Bielefeld , Universitätsstr. 25, 33615 Bielefeld , Germany

2. Institute of Physics , Johannes Gutenberg Universität Mainz , Staudinger Weg 7, 55128 Mainz , Germany

Abstract

Abstract We investigate the electronic transport at the internal interface within a selection of metallic bilayer nanostructures using the contact-free, all-optical method of THz time-domain spectroscopy. The Ru/Co, Ru/Pt, and Ru/Al bilayer nanostructures and their individual constituent metals are studied, with Ru representing an archetypal d-band metal, Co an archetypal ferromagnet, and Pt and Al archetypal heavy and light metals, respectively. The THz conductivity data were analyzed in terms of Drude and Bloch–Grüneisen models, and the interface current coefficient of the internal nanointerface was determined. Strong temperature dependency of the interface current coefficient in the Ru/Co nanostructure is revealed.

Funder

Deutsche Forschungsgemeinschaft

Horizon 2020 Framework Programme

TopDyn and the Zeiss Foundation

HORIZON EUROPE European Innovation Council

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2023-0721/pdf

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