ABSENCE OF LOW-TEMPERATURE SATURATION OF ELECTRON ELECTRON-SCATTERING IN A SINGLE-MODE QUANTUM WIRE

被引:11
作者
FASOL, G [1 ]
机构
[1] CAVENDISH LAB, HITACHI CAMBRIDGE LAB, CAMBRIDGE CB3 0HE, ENGLAND
关键词
D O I
10.1063/1.107759
中图分类号
O59 [应用物理学];
学科分类号
摘要
At helium temperatures electron-electron scattering determines the phase breaking and therefore limits the size of quantum interference devices. The electron-electron scattering times and scattering lengths are calculated numerically for ideal single mode quantum wires. The striking result of the present work is that there is no saturation of the electron-electron scattering time at low temperatures in an ideal single mode quantum wire without impurity scattering, in contrast to the two- and three-dimensional cases. Phase coherence lengths up to 10 mm are predicted for mK temperatures and up to 50-mu-m around 4 K. Conditions to observe such long coherence lengths are discussed.
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页码:831 / 833
页数:3
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