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{\Large \bf Quantum Condensed Matter Theory Group}\\

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Professor          &:&Sadamichi~Maekawa\\
Associate Professor&:&Takami~Tohyama\\
Assistant Professor&:&Tomio~Koyama,~Saburo~Takahashi and~Wataru~Koshibae\\
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(http://www.maekawa-lab.imr.tohoku.ac.jp/)\\
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    The microscopic world such as atoms and molecules is governed by
    quantum mechanics which is a different law from that in the
    macroscopic world. This law sometimes appears in front of us when
    materials are selected and/or microfabrication technique is
    utilized to them. Superconductivity which appears in cuprates,
    metals and alloys is a typical example. Anomalous change of the
    electrical resistance caused by the magnetism in transition metal
    oxides and magnetic nanostructures is another one.
    The aim of this laboratory is to study theoretically quantum
    phenomena in materials.

    The current research interests are:
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    \item The mechanism of superconductivity in cuprates and new
       superconducting materials with unique properties.
    \item The metal-insulator transition and related anomalous phenomena
       in transition metal oxides.
    \item The interplay of magnetism and transport properties in
       magnetic nanostructures.
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    By combining various theoretical methods and numerical ones
    with supercomputers, the above subjects are studied in
    collaboration with experimental groups.

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