Effect of Level Broadening on the Polarizability in a Two-Dimensional System
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The Lindhard polarizability is calculated in a two-dimensional system in theself-consistent Born approximation by assuming short-range scatterers. Theknown singularity at q=2k., where AF is the Fetmi wave vector, is shown to berounded off in the presence of impurities. The effect is similar to that of nonzerotemperatures in contrast to the result of Nkoma [J. Phys. C 14 (1981) 1685].
- 社団法人日本物理学会の論文
- 1982-10-15
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