Scientific article
Open access

Layered metals as polarized transparent conductors

Published inNature communications, vol. 14, no. 1, p. 1-7; 3147
Publication date2023-05-30
First online date2023-05-30

The quest to improve transparent conductors balances two key goals: increasing electrical conductivity and increasing optical transparency. To improve both simultaneously is hindered by the physical limitation that good metals with high electrical conductivity have large carrier densities that push the plasma edge into the ultra-violet range. Technological solutions reflect this trade-off, achieving the desired transparencies only by reducing the conductor thickness or carrier density at the expense of a lower conductance. Here we demonstrate that highly anisotropic crystalline conductors offer an alternative solution, avoiding this compromise by separating the directions of conduction and transmission. We demonstrate that slabs of the layered oxides Sr 2 RuO 4 and Tl 2 Ba 2 CuO 6+δ are optically transparent even at macroscopic thicknesses >2 μm for c-axis polarized light. Underlying this observation is the fabrication of out-of-plane slabs by focused ion beam milling. This work provides a glimpse into future technologies, such as highly polarized and addressable optical screens.

Research group
Citation (ISO format)
PUTZKE, Carsten et al. Layered metals as polarized transparent conductors. In: Nature communications, 2023, vol. 14, n° 1, p. 1–7. doi: 10.1038/s41467-023-38848-0
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Article (Published version)
ISSN of the journal2041-1723

Technical informations

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