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Double Qdots Control Kondo Effect

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ATHENS, Ohio, Sept. 15, 2006 -- Two quantum dots connected by wires could help scientists better control the Kondo effect in experiments and could lead to a better understanding of structures such as superconductors, according to a new study. The Kondo effect occurs when electrons become trapped around the magnetic impurities in semiconductor materials, which prompts the electrons to change their spin. This phenomenon has intrigued scientists, as electronic correlations can create interesting and complex behavior in materials.Nanoscale metallic electrodes (in yellow) can be used to confine electrons in small regions,...Read full article

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    Published: September 2006
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    astronomyBasic ScienceelectronsKondo EffectNews & FeaturesOhio Universityquantum dotssuperconductorsUlloaUniversity of Florida

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