MINIBANDS IN THE CONTINUUM OF MULTI-QUANTUM-WELL SUPERLATTICES

被引：24

作者：

GERSHONI, D ^{[1
]}

OIKNINESCHLESINGER, J ^{[1
]}

EHRENFREUND, E ^{[1
]}

RITTER, D ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.71.2975

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of well defined minibands and minigaps between them, at energies above the barriers in multi-quantum-well structures. Using intersubband absorption spectroscopy, we have observed the optical transitions between confined electronic states of isolated quantum wells to minibands in the continuum of the periodic structure. By comparison with a theoretical model we spectroscopically identify all the observed transitions and explain their strength and spectral shape. In addition, we estimate the coherence length of the electronic wave function in these minibands comparing the absorption spectrum with that of a finite array of quantum wells.

引用

页码：2975 / 2978

页数：4

共 15 条

[1] INTERSUBBAND ABSORPTION IN IN0.53GA0.47AS/IN0.52AL0.48AS MULTIPLE QUANTUM-WELLS
ASAI, H
KAWAMURA, Y
[J]. PHYSICAL REVIEW B, 1991, 43 (06): : 4748 - 4759
[2] EIGENFUNCTION-EXPANSION METHOD FOR SOLVING THE QUANTUM-WIRE PROBLEM - FORMULATION
BARAFF, GA
GERSHONI, D
[J]. PHYSICAL REVIEW B, 1991, 43 (05) : 4011 - 4022
[3] BASTARD G, 1988, WAVE MECHANICS APPLI
[4] OBSERVATION OF AN ELECTRONIC BOUND-STATE ABOVE A POTENTIAL WELL
CAPASSO, F
SIRTORI, C
FAIST, J
SIVCO, DL
CHU, SNG
CHO, AY
[J]. NATURE, 1992, 358 (6387) : 565 - 567
[5] SATURATION OF INTERSUBBAND TRANSITIONS IN P-TYPE SEMICONDUCTOR QUANTUM WELLS
CHANG, YC
JAMES, RB
[J]. PHYSICAL REVIEW B, 1989, 39 (17): : 12672 - 12681
[6] HOT-ELECTRON SPECTROSCOPY OF BLOCH ELECTRONS IN HIGH-ORDER MINIBANDS IN SEMICONDUCTOR SUPERLATTICES
ENGLAND, P
HAYES, JR
COLAS, E
HELM, M
[J]. PHYSICAL REVIEW LETTERS, 1989, 63 (16) : 1708 - 1711
[7] GERSHONI D, IN PRESS IEEE J QUAN
[8] GAAS/GAINP MULTIQUANTUM WELL LONG-WAVELENGTH INFRARED DETECTOR USING BOUND-TO-CONTINUUM STATE ABSORPTION
GUNAPALA, SD
LEVINE, BF
LOGAN, RA
TANBUNEK, T
HUMPHREY, DA
[J]. APPLIED PHYSICS LETTERS, 1990, 57 (17) : 1802 - 1804
[9] STRONG 8.2 MU-M INFRARED INTERSUBBAND ABSORPTION IN DOPED GAAS/ALAS QUANTUM-WELL WAVE-GUIDES
LEVINE, BF
MALIK, RJ
WALKER, J
CHOI, KK
BETHEA, CG
KLEINMAN, DA
VANDENBERG, JM
[J]. APPLIED PHYSICS LETTERS, 1987, 50 (05) : 273 - 275
[10] PHOTOINDUCED INTERSUBBAND ABSORPTION IN LATTICE-MATCHED INGAAS/INP MULTIQUANTUM WELL
OIKNINESCHLESINGER, J
EHRENFREUND, E
GERSHONI, D
RITTER, D
PANISH, MB
HAMM, RA
[J]. APPLIED PHYSICS LETTERS, 1991, 59 (08) : 970 - 972

← 1 2 →