Electronic transparency of internal interfaces in metallic nanostructures comprising light, heavy and ferromagnetic metals measured by terahertz spectroscopy
Year: 2024
Type: article
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.
Source: Nanophotonics
Institutions: Bielefeld University, Johannes Gutenberg University Mainz
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,706
Awards: G1158078440, Extreme Optical Nonlinearities in 2D materials for Far-Infrared Photonics, G1225125618, G1361388166, Magnetism and the effects of Electric Field, Nonlinear Magnons for Reservoir Computing in Reciprocal Space, G2095278010, TRR 173: Spin+X: Der Spin in seiner kollektiven Umgebung, G2924164741, G434337789, G5871474379, G6327420348, Integrierte GraphenaufChip Terahertz Technologie (INTEGRATECH), G887947398, G925760876
OpenAlex ID: W4390848293