The role of electron phase coherence in quantum transport through open ballistic cavities

被引：0
|
作者：
Bird, JP
Micolich, AP
Akis, R
Ferry, DK
Newbury, R
Taylor, RP
Olatona, DM
Wirtz, R
Ochiai, Y
Ishibashi, K
Aoyagi, Y
Sugano, T
机构：
[1] RIKEN, Nanoelect Mat Lab, Wako, Saitama 35101, Japan
[2] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
[3] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA
[4] Chiba Univ, Dept Mat Sci, Inage Ku, Chiba 263, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1997年 / 36卷 / 6B期
关键词：
quantum dots; phase coherence; wavefunction scarring; quantum chaos; magneto-conductance fluctuations; collimation;
D O I：
10.1143/JJAP.36.3968
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We consider the factors which limit electron wave coherence in open quantum dots, through a study of the reproducible fluctuations in their low temperature magneto-resistance. Our investigations indicate that at temperatures well below a degree Kelvin, electrons are able to propagate ballistically while maintaining phase coherence over very long time scales. Indeed, simple calculation reveals that electrons may undergo as many as a hundred collisions with the confining walls before coherence of their wavefunction is fully randomized.
引用
收藏
页码：3968 / 3970
页数：3
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