Anomalous polarization in coupled quantum dots

被引：9

作者：

Xu, XH

Jiang, H

Sun, X ^{[1
]}

Lin, HQ

机构：

[1] Fudan Univ, Res Ctr Theoret Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[3] Acad Sinica, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China

[4] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China

来源：

PHYSICA B | 2000年 / 279卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

quantum dot; polarization; photoexcitation;

D O I：

10.1016/S0921-4526(99)00740-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The coupled quantum dots can be designed to possess negative polarizability in low-lying excited states. In an electric field, the coupled dots are polarized, and the dipole moment of the coupled dots is reversed by absorbing one photon. This photoswitch effect is a new photoinduced phenomenon. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：214 / 216

页数：3

共 7 条

[1]

Bonin K. D., 1997, ELECT DIPOLE POLARIZ

[2] NEGATIVE TRANSCONDUCTANCE AND NEGATIVE DIFFERENTIAL RESISTANCE IN A GRID-GATE MODULATION-DOPED FIELD-EFFECT TRANSISTOR [J].

ISMAIL, K ;

CHU, W ;

YEN, A ;

ANTONIADIS, DA ;

SMITH, HI .

APPLIED PHYSICS LETTERS, 1989, 54 (05) :460-462

[3]

LANDAU LD, 1977, QUANTNM MECH

[4] OBSERVATION OF DISCRETE ELECTRONIC STATES IN A ZERO-DIMENSIONAL SEMICONDUCTOR NANOSTRUCTURE [J].

REED, MA ;

RANDALL, JN ;

AGGARWAL, RJ ;

MATYI, RJ ;

MOORE, TM ;

WETSEL, AE .

PHYSICAL REVIEW LETTERS, 1988, 60 (06) :535-537

[5] Femtoscience: From femtoseconds to attoseconds [J].

Stapelfeldt, H ;

Constant, E ;

Corkum, PB .

PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, 1996, 33 (1-3) :209-215

[6]

SUN X, 1998, P ORG SOL S OK

[7]

WATANABE S, 1996, FRONTIERS LASER PHYS

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