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Investigation of electron wave function hybridization in Ga0.25In0.75As/InP arrays

Martin, T. P. ; Fairbanks, M. S. ; Scannell, B. C. ; Marlow, C. A. ; Linke, Heiner LU orcid and Taylor, R. P. (2009) In Applied Physics Letters 95(18).
Abstract
We present a measurement technique for quantifying coupling between semiconductor quantum dots in an array. This technique employs magnetoconductance fluctuations to probe the decrease in the average spacing of the quantum energy levels as the electron wave functions in the dots undergo hybridization. Focusing on Ga0.25In0.75As dots, we investigate hybridization as the coupling strength is varied and the number of dots in the array is increased. Our technique reveals a significant drop in the average energy level spacing for multiple dot arrays, which is strong evidence for wave function hybridization.
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
magnetoresistance, indium compounds, III-V semiconductors, gallium arsenide, energy states, fluctuations, semiconductor quantum dots, wave, functions
in
Applied Physics Letters
volume
95
issue
18
article number
182105
publisher
American Institute of Physics (AIP)
external identifiers
  • wos:000271666800038
  • scopus:70449364049
ISSN
0003-6951
DOI
10.1063/1.3258495
language
English
LU publication?
yes
id
e19ea4ad-e1a9-408b-a7a2-3ee2df068411 (old id 1519664)
date added to LUP
2016-04-01 12:37:54
date last changed
2021-06-16 04:26:03
@article{e19ea4ad-e1a9-408b-a7a2-3ee2df068411,
  abstract     = {We present a measurement technique for quantifying coupling between semiconductor quantum dots in an array. This technique employs magnetoconductance fluctuations to probe the decrease in the average spacing of the quantum energy levels as the electron wave functions in the dots undergo hybridization. Focusing on Ga0.25In0.75As dots, we investigate hybridization as the coupling strength is varied and the number of dots in the array is increased. Our technique reveals a significant drop in the average energy level spacing for multiple dot arrays, which is strong evidence for wave function hybridization.},
  author       = {Martin, T. P. and Fairbanks, M. S. and Scannell, B. C. and Marlow, C. A. and Linke, Heiner and Taylor, R. P.},
  issn         = {0003-6951},
  language     = {eng},
  number       = {18},
  publisher    = {American Institute of Physics (AIP)},
  series       = {Applied Physics Letters},
  title        = {Investigation of electron wave function hybridization in Ga0.25In0.75As/InP arrays},
  url          = {http://dx.doi.org/10.1063/1.3258495},
  doi          = {10.1063/1.3258495},
  volume       = {95},
  year         = {2009},
}