Collective modes in semiconductor double quantum well systems

被引：0
|
作者：
Bolcatto, PG [1 ]
Proetto, CR [1 ]
机构：
[1] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 Bariloche, Rio Negro, Argentina
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2000年 / 220卷 / 01期
关键词：
D O I：
10.1002/1521-3951(200007)220:1<65::AID-PSSB65>3.0.CO;2-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The interplay of tunneling, Coulomb coupling, and many-body effects on the charge-density (CDE) and spin-density (SDE) excitations of double quantum well systems has been analyzed. For increasing inter-well distances, the system moves from the strong-tunneling regime (one-well limit) towards the zero-tunneling but still strongly Coulomb coupled regime. Important renormalizations due to many-body effects are found in the long-wavelength limit of the CDE and SDE, with the latter exhibing a soft-mode in the intermediate tunneling, low-density regime.
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页码：65 / 70
页数：6
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