polar metals tagged posts

New Material Combines Useful, Typically Incompatible Properties

Geometric stabilization of polar NdNiO3 via octahedral tilt engineering.

Geometric stabilization of polar NdNiO3 via octahedral tilt engineering.

Engineers and Physicists have created an entirely new material in which completely contradictory properties can coexist.”Polar metals should not be possible,” says Chang-Beom Eom, the professor of materials science and engineering. Undeterred by the laws of the universe, Eom et al created a compound that is a scientific oxymoron. Through a new synthesis approach supported by computational modeling, the group made a crystal with multiple personalities: part polar, part metallic.

Metals conduct electricity because electrons flow freely throughout them. Polar materials, by contrast, impede the free flow of electrons and work as electrical insulators. First, they separated the polar and metallic parts of the crystal...

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