PMID- 20672130
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20110714
LR  - 20211020
IS  - 1556-276X (Electronic)
IS  - 1931-7573 (Print)
IS  - 1556-276X (Linking)
VI  - 5
IP  - 5
DP  - 2010 Mar 10
TI  - A two-dimensional electron gas as a sensitive detector for time-resolved 
      tunneling measurements on self-assembled quantum dots.
PG  - 829-33
LID - 10.1007/s11671-010-9569-2 [doi]
AB  - A two-dimensional electron gas (2DEG) situated nearby a single layer of 
      self-assembled quantum dots (QDs) in an inverted high electron mobility 
      transistor (HEMT) structure is used as a detector for time-resolved tunneling 
      measurements. We demonstrate a strong influence of charged QDs on the conductance 
      of the 2DEG which allows us to probe the tunneling dynamics between the 2DEG and 
      the QDs time resolved. Measurements of hysteresis curves with different sweep 
      times and real-time conductance measurements in combination with an boxcar-like 
      evaluation method enables us to unambiguously identify the transients as 
      tunneling events between the s- and p-electron QD states and the 2DEG and rule 
      out defect-related transients.
FAU - Geller, Martin
AU  - Geller M
AD  - Experimental Physics and CeNIDE, University of Duisburg-Essen, 47058, Duisburg, 
      Germany. martin.geller@uni-due.de.
FAU - Marquardt, Bastian
AU  - Marquardt B
FAU - Lorke, Axel
AU  - Lorke A
FAU - Reuter, Dirk
AU  - Reuter D
FAU - Wieck, Andreas D
AU  - Wieck AD
LA  - eng
PT  - Journal Article
DEP - 20100310
PL  - United States
TA  - Nanoscale Res Lett
JT  - Nanoscale research letters
JID - 101279750
PMC - PMC2893892
OTO - NOTNLM
OT  - III-V semiconductors
OT  - Indium compounds
OT  - Self-assembly
OT  - Semiconductor quantum dots
OT  - Tunneling
OT  - Two-dimensional electron gas
EDAT- 2010/07/31 06:00
MHDA- 2010/07/31 06:01
PMCR- 2010/03/10
CRDT- 2010/07/31 06:00
PHST- 2009/12/15 00:00 [received]
PHST- 2010/02/25 00:00 [accepted]
PHST- 2010/07/31 06:00 [entrez]
PHST- 2010/07/31 06:00 [pubmed]
PHST- 2010/07/31 06:01 [medline]
PHST- 2010/03/10 00:00 [pmc-release]
AID - 1556-276X-5-829 [pii]
AID - 10.1007/s11671-010-9569-2 [doi]
PST - epublish
SO  - Nanoscale Res Lett. 2010 Mar 10;5(5):829-33. doi: 10.1007/s11671-010-9569-2.