Relaxation of hot electrons in a degenerate two-dimensional electron system: transition to one-dimensional scattering
Relaxation of hot electrons in a degenerate two-dimensional electron system: transition to one-dimensional scattering
复制标题
简并二维电子系统中热电子的弛豫:过渡到一维散射
DOI:
10.1103/physrevb.83.235404
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发表时间:
2011
影响因子:
3.7
通讯作者:
S. Ludwig
中科院分区:
文献类型:
--
作者:
D. Taubert;C. Tomaras;G. J. Schinner;H. P. Tranitz;W. Wegscheider;S. Kehrein;S. Ludwig
The energy relaxation channels of hot electrons far from thermal equilibrium in a degenerate two-dimensional electron system are investigated in transport experiments in a mesoscopic three-terminal device. We observe a transition from two dimensions at zero magnetic field to quasi-one-dimensional scattering of the hot electrons in a strong magnetic field. In the two-dimensional case, electron-electron scattering is the dominant relaxation mechanism, while the emission of optical phonons becomes more and more important as the magnetic field is increased. The observation of up to 11 optical phonons emitted per hot electron allows us to determine the onset energy of longitudinal-optical phonons in GaAs at cryogenic temperatures with a high precisionmeV. Numerical calculations of electron-electron scattering and the emission of optical phonons underline our interpretation in terms of a transition to one-dimensional dynamics.
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DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
J. Kuhl;W. Bron
通讯作者:
W. Bron
DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
R. Nahory
通讯作者:
R. Nahory
影响因子:
3.7
作者:
M.G. Prokudina;V.S. Khrapai;S. Ludwig;J.P. Kotthaus;H.P. Tranitz;W. Wegscheider
通讯作者:
W. Wegscheider
影响因子:
8.6
作者:
Lu;Tsui;Cox
通讯作者:
Cox
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
J. Williamson;H. Houten;C. Beenakker;M. Broekaart;L. Spendeler;V. Wees;C. Foxon
通讯作者:
C. Foxon