Columbia Researchers develops material that would make Computers ultra-powerful
Columbia researchers discovered that electronic and magnetic properties of this Quantum material are linked – a discovery that could enable both fundamental research and potential applications in spintronics. Information transmitted from computer is stored in magnetic materials in the direction in which electrons spin. This makes devices lighter and improves their performance.
Columbian Researchers were looking for materials that combine both quantum properties and found a strong link between electron transport and magnetism in a material called chromium sulfide bromide (CrSBr). Developed by chemist Xavier Roy, CrSBr is a so-called Van der Waals crystal that can be peeled into stackable 2D layers just a few atomic layers thick.
Other materials are easily destroyed by oxygen and water but CrSBr crystals are stable at surrounding conditions. CrSBr crystals hold to their magnetic properties even at the high temperature of -280°F, so helium which is quite expensive is not needed cooled to a temperature of -450°F. CrSBr is infinitely easier to process than other 2D magnets, which allows us to make novel devices to test their properties, said Evan Telford, a postdoc in the Roy lab who received his 2020 PhD in physics from Columbia. Last year, colleagues Nathan Wilson and Xiaodong Xu from the University of Washington and Xiaoyang Zhu from Columbia found a link between magnetism and how CrSBr responds to light.
The researchers team used an electric field with different densities, magnetic fields and temperatures to study CrSBr layers across different electron densities, magnetic fields and temperatures. Different parameters that can be adjusted to create different effects in one material. As the properties in CrSBr changed, so did its magnetism. Especially as researchers are trying to one day build chips out of such 2D magnets that could be used for quantum computing and to store huge amounts of data in a small space
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