Energy Transport by Neutral Collective Excitations at the Quantum Hall Edge

被引：16
作者：
Deviatov, E. V. [1 ]
Lorke, A. [2 ]
Biasiol, G. [3 ]
Sorba, L. [4 ,5 ]
机构：
[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[2] Univ Duisburg Essen, Lab Festkorperphys, D-47048 Duisburg, Germany
[3] IOM CNR, Lab TASC, I-34149 Trieste, Italy
[4] CNR, NEST, Ist Nanosci, I-56127 Pisa, Italy
[5] Scuola Normale Super Pisa, I-56127 Pisa, Italy
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 25期
关键词：
STATES; CHANNELS; REGIME;
D O I：
10.1103/PhysRevLett.106.256802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We use the edge of the quantum Hall sample to study the possibility for counterpropagating neutral collective excitations. A novel sample design allows us to independently investigate charge and energy transport along the edge. We experimentally observe an upstream energy transfer with respect to the electron drift for the filling factors 1 and 1/3. Our analysis indicates that a neutral collective mode at the interaction-reconstructed edge is a proper candidate for the experimentally observed effect.
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收藏
页数：4
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