V2EX mott insulator

Mott Insulator

定义 Definition

莫特绝缘体:一种按“能带理论”本应导电(例如有未填满能带),却因为强电子-电子相互作用(库仑排斥)导致电子被局域化而呈现绝缘性的材料。常见于某些过渡金属氧化物等强关联体系。(该术语也常与“莫特金属-绝缘体转变”一起出现。)

发音 Pronunciation (IPA)

/mt nsjuletr/(美式常见)
/mt nsjulet/(英式常见)

例句 Examples

A Mott insulator does not conduct electricity even though it has electrons available.
莫特绝缘体即使看起来“有可用电子”,也不导电。

In many transition-metal oxides, increasing pressure or changing doping can drive a Mott insulator into a metallic state by reducing electron correlation effects.
在许多过渡金属氧化物中,增大压力或改变掺杂可通过削弱电子关联效应,使莫特绝缘体转变为金属态。

词源 Etymology

“Mott”来自英国物理学家 Nevill F. Mott(内维尔莫特)的姓氏;他对固体中电子行为、尤其是金属绝缘体转变的理解与理论发展影响深远。“insulator”意为“绝缘体”。合起来指“由莫特机制(强电子相互作用导致局域化)产生的绝缘体”,区别于由能带完全填满等机制产生的普通(带隙)绝缘体。

相关词 Related Wrds

文学与著作 Literary Works

  • Nevill F. Mott, Metal-Insulator Transitions(《金属-绝缘体转变》)
  • Nevill F. Mott & E. A. Davis, Electronic Processes in Non-Crystalline Materials(《非晶材料中的电子过程》)
  • N. F. Mott, “The basis of the electron theory of metals, with special reference to the transition metals” 等相关论文与综述中常讨论莫特绝缘行为与莫特转变
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