Mottn.

Brit.

/mɒt/, U.S.

/mɑt/

Origin: From a proper name. Etymon: proper name Mott.

Etymology: < the name of Sir Nevill Francis Mott (1905–96), English physicist, who investigated the electrical properties of solids ( Proc. Physical Soc. (1949) A. 62 416, Canad. Jrnl. Physics (1956) 34 1356, etc.).

Physics.

Used attributively with reference to Mott's theories of semiconduction; Mott insulator n. a material which does not conduct electricity because the concentration of valency electrons in it is below a critical value. Mott transition n. the discontinuous process, involving a sudden change in the number of charge carriers, which takes place when a material passes from an insulating state to a metallic conducting state (or vice versa).

ΘΚΠ

society > occupation and work > materials > raw material > plants, grasses, or reeds > [noun] > straw > a single straw or particle of straw

strawc950

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Mott1963

1963 C. Kittel Quantum Theory Solids xv. 298 In a Mott exciton the wavefunction in the relative coordinate extends over many atoms... Mott excitons are found in semiconductor crystals having small energy gaps and high dielectric constants.

1972 J. M. Ziman Princ. Theory Solids (ed. 2) v. 170 The Mott transition has been observed in certain transition metal oxides, which become conducting, very suddenly, above a certain temperature.

1977 Time 24 Oct. 52/3 His later work with amorphous materials led to development of the ‘Mott model’, a theoretical framework for understanding the properties of semiconductors made from amorphous materials such as sulfur, selenium and tellurium.

1981 M. Héritier & P. Lederer in J. T. Devreese et al. Recent Devel. Condensed Matter Physics III. 235 In a Mott insulator, excess charge carriers in narrow half-filled degenerate bands form spin polarons.

1989 New Scientist 7 Jan. 57/1 The materials with a high temperature are a peculiar form of electrical insulator called a ‘Mott insulator’ which becomes a conductor when a few ‘holes’ are chemically added.

1996 Daily Tel. 12 Aug. 19 His models of solid state behaviour..included an analysis of how certain conductors can become insulators and vice-versa—processes called ‘Mott transitions’.

This is a new entry (OED Third Edition, March 2003; most recently modified version published online March 2022).

单词	mott
释义	Mottn. Brit. /mɒt/, U.S. /mɑt/ Origin: From a proper name. Etymon: proper name Mott. Etymology: < the name of Sir Nevill Francis Mott (1905–96), English physicist, who investigated the electrical properties of solids ( Proc. Physical Soc. (1949) A. 62 416, Canad. Jrnl. Physics (1956) 34 1356, etc.). Physics. Used attributively with reference to Mott's theories of semiconduction; Mott insulator n. a material which does not conduct electricity because the concentration of valency electrons in it is below a critical value. Mott transition n. the discontinuous process, involving a sudden change in the number of charge carriers, which takes place when a material passes from an insulating state to a metallic conducting state (or vice versa). ΘΚΠ society > occupation and work > materials > raw material > plants, grasses, or reeds > [noun] > straw > a single straw or particle of straw strawc950 fescue1377 mote1550 haulm1552 feasetraw1595 straw-mote1747 Mott1963 1963 C. Kittel Quantum Theory Solids xv. 298 In a Mott exciton the wavefunction in the relative coordinate extends over many atoms... Mott excitons are found in semiconductor crystals having small energy gaps and high dielectric constants. 1972 J. M. Ziman Princ. Theory Solids (ed. 2) v. 170 The Mott transition has been observed in certain transition metal oxides, which become conducting, very suddenly, above a certain temperature. 1977 Time 24 Oct. 52/3 His later work with amorphous materials led to development of the ‘Mott model’, a theoretical framework for understanding the properties of semiconductors made from amorphous materials such as sulfur, selenium and tellurium. 1981 M. Héritier & P. Lederer in J. T. Devreese et al. Recent Devel. Condensed Matter Physics III. 235 In a Mott insulator, excess charge carriers in narrow half-filled degenerate bands form spin polarons. 1989 New Scientist 7 Jan. 57/1 The materials with a high temperature are a peculiar form of electrical insulator called a ‘Mott insulator’ which becomes a conductor when a few ‘holes’ are chemically added. 1996 Daily Tel. 12 Aug. 19 His models of solid state behaviour..included an analysis of how certain conductors can become insulators and vice-versa—processes called ‘Mott transitions’. This is a new entry (OED Third Edition, March 2003; most recently modified version published online March 2022). < n.1963
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