IDENTIFYING THE DISTINCT PHASES OF CARRIER TRANSPORT IN SEMICONDUCTORS WITH 10-FS RESOLUTION

被引：112

作者：

HU, BB

DESOUZA, EA

KNOX, WH

CUNNINGHAM, JE

NUSS, MC

KUZNETSOV, AV

CHUANG, SL

机构：

[1] UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611

[2] UNIV ILLINOIS,DEPT ELECT & COMP ENGN,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.74.1689

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the very early processes of photogenerated carrier transport in GaAs and Si using THz nonlinear spectroscopy with 10 fs time resolution. This ultrahigh time resolution allows us to clearly separate the instantaneous creation of polarized electron-hole pairs and the subsequent carrier motion for the first time. In addition, our results give the first clear demonstration of the distinct phases of carrier transport; ballistic transport, electron velocity overshoot, and steady-state drift. © 1995 The American Physical Society.

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页码：1689 / 1692

页数：4

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