The Kondo effect in Bohm-Aharonov resonant tunneling devices

被引：0
|
作者：
Iglesias, JR
Anda, EV
Davidovich, MA
Chiappe, G
机构：
[1] UNIV FED FLUMINENSE,INST FIS,BR-24210340 NITEROI,RJ,BRAZIL
[2] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22452970 RIO JANEIRO,BRAZIL
[3] UNIV BUENOS AIRES,DEPT FIS,BUENOS AIRES,BUENOS AIRES,ARGENTINA
来源：
PHYSICA B | 1997年 / 230卷
关键词：
mesoscopic ring; Bohm-Aharonov effect; Kondo resonance; Kondo effect;
D O I：
10.1016/S0921-4526(96)00634-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The Bohm-Aharonov effect in a mesoscopic ring containing a double-barrier structure in its upper part is investigated. The interference between electrons propagating along different sides of the ring is modified by the presence of a double barrier. A local Coulomb interaction, U, is included to describe the highly localized electrons at the well and an Abrikosov-Suhl (AS) resonance appears at low temperatures. So, in this energy range the current is flux dependent. Above the Kondo temperature T-K the AS resonance disappears and the flux-independent behavior is recovered. The current is studied as a function of magnetic Aux, gate potential and position of the Fermi level.
引用
收藏
页码：478 / 481
页数：4
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