The theory of the '0.7 anomaly' in quantum point contacts

被引：12
|
作者：
Meir, Yigal [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 16期
关键词：
D O I：
10.1088/0953-8984/20/16/164208
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The phenomenology of the '0.7 anomaly' in quantum point contacts is fully explained in terms of a quasi-localized state, which forms as the point contact opens up. Detailed numerical calculations within spin-density functional theory do indeed confirm the emergence of such a state. Quantitative calculations of the conductance and the noise are obtained using a model based on these observations, and are in excellent agreement with existing experimental observations.
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页数：4
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