New research finds evidence of waveguiding in a unique quantum material. These findings counter expectations about how metals conduct light and may push imaging beyond optical diffraction limits. We perceive metals as shiny when we encounter metals in our day-to-day lives. That’s because common m
Light Conduction in a Metal: Waveguides are observed in a semimetal known as ZrSiSe. Credit: Nicoletta Barolini, Columbia University
However, scientists are increasingly finding examples that challenge expectations about how things should behave in the burgeoning field of quantum materials. New research describes a metal capable of conducting light through it. Conducted by a team of researchers led by Dmitri Basov, Higgins Professor of Physics aton October 26. “These results defy our daily experiences and common conceptions,” said Basov.
In their current work, Shao and his collaborators at Columbia and UCSD observed such zig-zag movement of light, so-called hyperbolic waveguide modes, through ZrSiSe samples of varying thicknesses. Such waveguides can guide light through a material. Here they result from photons of light mixing with electron oscillations to create hybrid quasiparticles called plasmons.
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