Abstract
We describe the growth and investigation of a novel type of structure in which self-organised InAs quantum dots are incorporated in the AlAs tunnelling barrier of an n-i-n single-barrier GaAs/AlAs/GaAs heterostructure. The lowtemperature current-voltage curves exhibit a series of pronounced peaks which are absent in a control sample grown without InAs in the barrier. By studying their behaviour in a magnetic field B, we attribute these peaks to single-electron tunnelling through single discrete zero-dimensional states of individual InAs dots in the barrier.
Original language | English |
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Pages (from-to) | 782-786 |
Number of pages | 5 |
Journal | Journal of Crystal Growth |
Volume | 175 - 176 |
Issue number | Part 2 |
DOIs | |
Publication status | Published - 1 May 1997 |