Mott transition
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This is also known as the "metal-insulator transition." When strong electronic correlation exists, electrons are localized at the position of each atom, forming an insulator, but when the electronic correlation weakens, the electrons move from a localized state to an itinerant state throughout the crystal, creating a conduction band and causing a transition to a metal. This can be seen in nickel oxide (NiO), for example. Source: Asakura Publishing Dictionary of Laws Information |
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別名を「金属‐絶縁体転移」ともいう．強い電子相関が存在すると，電子は各原子の位置に局在していて，絶縁体を構成しているのだが，電子相関が弱まると電子は局在状態から結晶全体への遍歴状態へと移行し，伝導帯が生じて金属への転移が起こる．酸化ニッケル（NiO）などでみられる．
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