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    fractional quantum Hall states (FQHS) tagged posts

    2D Semiconductors found to be close-to-ideal Fractional Quantum Hall Platform

    July 7, 2020, Categories  Physics, Technology/Electronics

    Illustration of the monolayer WSe2 hosting "composite fermions"
    A monolayer semiconductor is found to be a close-to-ideal platform for fractional quantum Hall state—a quantum liquid that emerges under large perpendicular magnetic fields. The image illustrates monolayer WSe2 hosting “composite fermions,” a quasi-particle that forms due to the strong interactions between electrons and is responsible for the sequence of fractional quantum Hall states.

    Columbia University researchers report that they have observed a quantum fluid known as the fractional quantum Hall states (FQHS), one of the most delicate phases of matter, for the first time in a monolayer 2D semiconductor. Their findings demonstrate the excellent intrinsic quality of 2D semiconductors and establish them as a unique test platform for future applications in quantum computing...

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