Van der Waals magnets, a material for future semiconductors

Nanowerk  February 16, 2020
When van der Waals materials are combined with other 2D materials, they can create new materials that show previously undiscovered properties. However, most van der Waals magnetic materials have some constraints in terms of spintronics application because of their low Curie temperature and high coercivity making them unsuitable for use in certain devices. An international team of researchers (South Korea, USA – Brookhaven National Laboratory, Lawrence Berkeley National Laboratory) found that Fe3–xGeTe2 nanoflakes show a significant suppression of the magnetic anisotropy with hole doping. Electronic structure measurements and calculations revealed that the chemical potential shift associated with hole doping is responsible for the reduced magnetic anisotropy by decreasing the energy gain from the spin–orbit induced band splitting. The findings provide an understanding of the intricate connection between electronic structures and magnetic properties in two-dimensional magnets and propose a method to engineer magnetic properties through doping…read more.  TECHNICAL ARTICLE

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