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Observation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">e</mml:mi><mml:mi mathvariant="italic">/</mml:mi><mml:mn>3</mml:mn></mml:math>Fractionally Charged Laughlin Quasiparticle
The existence of fractional charges carrying current is experimentally demonstrated. Using a 2D electron system in a high perpendicular magnetic field we measure the shot noise associated with tunneling in the fractional quantum Hall regime at Landau level filling factor 1/3. The noise gives a direct determination of the quasiparticle …