Absolute negative resistance induced by directional electron-electron scattering in a two-dimensional electron gas

被引：23
|
作者：
Kaya, Ismet I. [1 ]
Eberl, Karl
机构：
[1] Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey
[2] Max Planck Inst FKF, D-70569 Stuttgart, Germany
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.98.186801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A three-terminal device formed by two electrostatic barriers crossing an asymmetrically patterned two-dimensional electron gas displays an unusual potential depression at the middle contact, yielding absolute negative resistance. The device displays momentum and current transfer ratios that far exceed unity. The observed reversal of the current or potential in the middle terminal can be interpreted as the analog of Bernoulli's effect in a Fermi liquid. The results are explained by directional scattering of electrons in two dimensions.
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页数：4
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