Information in computers is transmitted through semiconductors by the movement of electrons and stored in the direction of the electron spin in magnetic materials. To shrink devices while improving their performance—a goal of an emerging field called spin-electronics ("spintronics")—researchers are searching for unique materials that combine both quantum properties. Writing in Nature Materials, a team of chemists and physicists at Columbia finds a strong link between electron transport and magnetism in a material called chromium sulfide bromide (CrSBr).
Created in the lab of Chemist Xavier Roy, CrSBr is a so-called van der Waals crystal that can be peeled into stackable, 2D layers that are just a few atoms thin. Unlike related materials that are quickly destroyed by oxygen and water, CrSBr crystals are stable at ambient conditions. These crystals also maintain their magnetic properties at the relatively high temperature of -280F, avoiding the need for expensive liquid helium cooled to a temperature of -450F.
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