CARRIER-CARRIER SCATTERING IN A DEGENERATE ELECTRON-SYSTEM - STRONG INHIBITION OF SCATTERING NEAR THE FERMI EDGE

被引：87
作者：
KIM, DS
SHAH, J
CUNNINGHAM, JE
DAMEN, TC
SCHMITTRINK, S
SCHAFER, W
机构：
[1] UNIV MARBURG, DEPT PHYS, W-3550 MARBURG, GERMANY
[2] UNIV MARBURG, CTR MAT SCI, W-3550 MARBURG, GERMANY
[3] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, HOCHSTLEISTUNGSRECHENZENTRUM, W-5170 JULICH, GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.68.2838
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the first direct measurement of carrier-carrier scattering rates in a degenerate electron system. Our results on modulation-doped quantum wells, using femtosecond four-wave-mixing (FWM) techniques, demonstrate a strong inhibition of scattering near the Fermi edge, and exhibit other behavior predicted by Landau Fermi liquid theory. Time-resolved (100 fs) FWM measurements clearly show photon echoes, demonstrating the inhomogeneous character of this intrinsic system, as well as prompt signals arising from many-body effects.
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页码：2838 / 2841
页数：4
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