TY  - JOUR
AU  - Agafonov, Oleksiy B.
AU  - Dais, Christian
AU  - Grützmacher, Detlev
AU  - Haug, Rolf J.
TI  - Quantum confinement effects in Si/Ge heterostructures with spatially ordered arrays of self-assembled quantum dots
JO  - Applied physics letters
VL  - 96
IS  - 22
SN  - 0003-6951
CY  - Melville, NY
PB  - American Inst. of Physics
M1  - FZJ-2015-05142
SP  - 222107 -
PY  - 2010
AB  - Magnetotunneling spectroscopy was employed to probe the confinement in vertical Si/Ge double-barrier resonant tunneling diodes with regularly distributed Gequantum 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 Gequantum dots. Assuming parabolic confinement, we extract the strength of the confinement potential of quantum dots.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000278404800030
DO  - DOI:10.1063/1.3442508
UR  - https://juser.fz-juelich.de/record/203127
ER  -