Details
| Original language | English |
|---|---|
| Article number | 222107 |
| Journal | Applied physics letters |
| Volume | 96 |
| Issue number | 22 |
| Publication status | Published - 31 May 2010 |
Abstract
Magnetotunneling spectroscopy was employed to probe the confinement in vertical Si/Ge double-barrier resonant tunneling diodes with regularly distributed Ge quantum dots. Their current-voltage characteristics reveal a steplike behavior in the vicinity of zero bias, indicating resonant tunneling of heavy-holes via three-dimensionally confined unoccupied hole states in Ge quantum dots. Assuming parabolic confinement, we extract the strength of the confinement potential of quantum dots.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Applied physics letters, Vol. 96, No. 22, 222107, 31.05.2010.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantum confinement effects in Si/Ge heterostructures with spatially ordered arrays of self-assembled quantum dots
AU - Agafonov, Oleksiy B.
AU - Dais, Christian
AU - Grützmacher, Detlev
AU - Haug, Rolf J.
PY - 2010/5/31
Y1 - 2010/5/31
N2 - Magnetotunneling spectroscopy was employed to probe the confinement in vertical Si/Ge double-barrier resonant tunneling diodes with regularly distributed Ge quantum dots. Their current-voltage characteristics reveal a steplike behavior in the vicinity of zero bias, indicating resonant tunneling of heavy-holes via three-dimensionally confined unoccupied hole states in Ge quantum dots. Assuming parabolic confinement, we extract the strength of the confinement potential of quantum dots.
AB - Magnetotunneling spectroscopy was employed to probe the confinement in vertical Si/Ge double-barrier resonant tunneling diodes with regularly distributed Ge quantum dots. Their current-voltage characteristics reveal a steplike behavior in the vicinity of zero bias, indicating resonant tunneling of heavy-holes via three-dimensionally confined unoccupied hole states in Ge quantum dots. Assuming parabolic confinement, we extract the strength of the confinement potential of quantum dots.
UR - http://www.scopus.com/inward/record.url?scp=77953584310&partnerID=8YFLogxK
U2 - 10.1063/1.3442508
DO - 10.1063/1.3442508
M3 - Article
AN - SCOPUS:77953584310
VL - 96
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 22
M1 - 222107
ER -