THE DENSITY OF STATES IN THE CONTINUOUS-SPECTRUM OF ONE-DIMENSIONAL SYSTEMS

被引：4

作者：

TRZECIAKOWSKI, W

GURIOLI, M

机构：

[1] POLISH ACAD SCI,HIGH PRESSURE RES CTR UNIPRESS,PL-01142 WARSAW,POLAND

[2] UNIV FLORENCE,DEPT PHYS,EUROPEAN LAB NONLINEAR SPECT,I-50125 FLORENCE,ITALY

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 01期

关键词：

D O I：

10.1088/0953-8984/5/1/011

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The change in the density of states introduced by some localized potential DELTArho(E) is finite even for infinite systems. We derive some simple analytical formulae for this quantity for three different one-dimensional systems: a finite potential step, a uniform electric field and a flat potential. In each case we relate DELTArho(E) to some parameters of the wavefunction. Our analytical expressions for DELTArho(E) should be useful in analysing the continuous spectrum of layered microstructures. As an example, we determine DELTArho(E) above the symmetric and asymmetric quantum wells.

引用

页码：105 / 114

页数：10

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