| 释义 |
Landau, n.2 Physics.|ˈlændaʊ|
[The name of Lev Davidovich Landau (1908–68), Russian theoretical physicist.]
Used attrib. to designate concepts introduced by Landau or arising out of his work, as Landau damping, the damping of a plasma oscillation through conversion of some of its kinetic energy into the potential energy of plasma particles, rather than through loss of momentum in collisions between particles; Landau level, each of a series of discrete energy levels into which a magnetic field splits the continuous energy distribution of the conduction electrons of a metal at very low temperatures.
1960G. Francis Ionization Phenomena in Gases vii. 260 A physical picture of Landau damping, i.e. without collisions, now emerges. 1963Bull. Amer. Physical Soc. VIII. 309/1 These oscillations can be explained by the scattering of electrons from the 1st to the 2nd or 3rd Landau levels through the absorption of optical phonons. 1968Jrnl. Physics C I. 1711 In the magnetophonon effect an oscillatory variation of resistance with magnetic field is caused by resonant scattering of electrons between Landau levels by longitudinal optical phonons. 1973Appl. Physics Lett. XXIII. 41/1 Because of the quantizing longitudinal magnetic field, the conduction band is split into Landau levels. 1987Nature 9 Apr. 563/2 As a result..the paradox arises of the disappearance of Landau damping in the magnetic field. |