…Solids are classified as metals, semiconductors, and insulators according to the ease with which electricity flows, but even semiconductors and insulators can transition to a metallic state by changing external parameters such as pressure, temperature, and impurity concentration. This phenomenon is called a metal-nonmetal transition, and although the phenomenon may appear to be the same, there are many different mechanisms that cause the transition. In 1949, Nevill Mott of England predicted that the metal-nonmetal transition occurs due to the Coulomb interaction between electrons, but the metal-nonmetal transition that occurs due to the mechanism of Coulomb interaction is generally called the Mott transition. … *Some of the terminology explanations that refer to "metal-nonmetal transition" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…固体は電気の流れやすさに応じて,金属,半導体,絶縁体に分類されるが,半導体や絶縁体でも,圧力,温度,不純物濃度のような外的パラメーターを変えることによって金属状態に移ることができる。このような現象を金属・非金属転移というが,金属・非金属転移は,現象としては同じようにみえても転移を起こす機構は多彩である。イギリスのモットNevill Mottは,1949年に電子間のクーロン相互作用によって金属・非金属転移が起こることを予言したが,一般にクーロン相互作用の機構によって起こる金属・非金属転移をモット転移と呼ぶ。… ※「金属・非金属転移」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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