Stretching quantum wells: A method for trapping free carriers in GaAs heterostructures

被引：62

作者：

Negoita, V

Snoke, DW

Eberl, K

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[2] Max Planck Inst Festkorperforsch, D-70506 Stuttgart, Germany

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 14期

关键词：

D O I：

10.1063/1.124915

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have demonstrated a method of using inhomogeneous stress to create an in-plane harmonic potential in GaAs quantum wells which works equally well for excitons and for free conduction electrons. The depth of the well can be continuously varied via an external control. This essentially provides a type of gate for controlling the motion of carriers, e.g., a two-dimensional electron gas, without using electric field. (C) 1999 American Institute of Physics. [S0003- 6951(99)00940-7].

引用

页码：2059 / 2061

页数：3

共 15 条

[1]

[Anonymous], ELECT HOLE DROPLETS

[2] Anomalous transport of indirect excitons in coupled AlAs/GaAs quantum wells [J].

Butov, LV ;

Zrenner, A ;

Hagn, M ;

Abstreiter, G ;

Bohm, G ;

Weimann, G .

SURFACE SCIENCE, 1996, 361 (1-3) :243-246

[3] CONDENSATION OF INDIRECT EXCITONS IN COUPLED ALAS/GAAS QUANTUM-WELLS [J].

BUTOV, LV ;

ZRENNER, A ;

ABSTREITER, G ;

BOHM, G ;

WEIMANN, G .

PHYSICAL REVIEW LETTERS, 1994, 73 (02) :304-307

[4] BAND OFFSETS IN TETRAHEDRAL SEMICONDUCTORS [J].

CARDONA, M ;

CHRISTENSEN, NE .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1988, 6 (04) :1285-1289

[5] INTERFACE STATES AND THE TRANSPORT OF 2-DIMENSIONAL INTERFACE EXCITONS IN ALGAAS/GAAS STRUCTURES [J].

GILLILAND, GD ;

WOLFORD, DJ ;

NORTHROP, GA ;

PETROVIC, MS ;

KUECH, TF ;

BRADLEY, JA .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1992, 10 (04) :1959-1964

[6] THERMODYNAMICS OF EXCITONIC MOLECULES IN SILICON [J].

GOURLEY, PL ;

WOLFE, JP .

PHYSICAL REVIEW B, 1979, 20 (08) :3319-3327

[7] Bose-Einstein statistics of an excitonic gas in two dimensions: Excitons and biexcitons in a GaAs quantum well [J].

Kim, JC ;

Wolfe, JP .

PHYSICAL REVIEW B, 1998, 57 (16) :9861-9868

[8]

Madelung O, 1987, NUMERICAL DATA FUNCT, V22a

[9] STRAIN-CONFINED ELECTRON-HOLE LIQUID IN GERMANIUM [J].

MARKIEWICZ, RS ;

WOLFE, JP ;

JEFFRIES, CD .

PHYSICAL REVIEW B, 1977, 15 (04) :1988-2005

[10] Harmonic-potential traps for indirect excitons in coupled quantum wells [J].

Negoita, V ;

Snoke, DW ;

Eberl, K .

PHYSICAL REVIEW B, 1999, 60 (04) :2661-2669

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