PMID- 23006618
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20121122
LR  - 20240321
IS  - 1556-276X (Electronic)
IS  - 1931-7573 (Print)
IS  - 1556-276X (Linking)
VI  - 7
IP  - 1
DP  - 2012 Sep 24
TI  - Large size self-assembled quantum rings: quantum size effect and modulation on 
      the surface diffusion.
PG  - 520
LID - 10.1186/1556-276X-7-520 [doi]
AB  - We demonstrate experimentally the submicron size self-assembled (SA) GaAs quantum 
      rings (QRs) by quantum size effect (QSE). An ultrathin In0.1 Ga0.9As layer with 
      different thickness is deposited on the GaAs to modulate the surface nucleus 
      diffusion barrier, and then the SA QRs are grown. It is found that the density of 
      QRs is affected significantly by the thickness of inserted In0.1 Ga0.9As, and the 
      diffusion barrier modulation reflects mainly on the first five monolayer . The 
      physical mechanism behind is discussed. The further analysis shows that about 160 
      meV decrease in diffusion barrier can be achieved, which allows the SA QRs with 
      density of as low as one QR per 6 mum2. Finally, the QRs with diameters of 438 nm 
      and outer diameters of 736 nm are fabricated using QSE.
FAU - Tong, Cunzhu
AU  - Tong C
AD  - State Key Laboratory of Luminescence and Applications, Changchun Institute of 
      Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 
      130033, China. ljwang2000@hotmail.com.
FAU - Yoon, Soon Fatt
AU  - Yoon SF
FAU - Wang, Lijun
AU  - Wang L
LA  - eng
PT  - Journal Article
DEP - 20120924
PL  - United States
TA  - Nanoscale Res Lett
JT  - Nanoscale research letters
JID - 101279750
PMC - PMC3502451
EDAT- 2012/09/26 06:00
MHDA- 2012/09/26 06:01
PMCR- 2012/09/24
CRDT- 2012/09/26 06:00
PHST- 2012/08/23 00:00 [received]
PHST- 2012/09/18 00:00 [accepted]
PHST- 2012/09/26 06:00 [entrez]
PHST- 2012/09/26 06:00 [pubmed]
PHST- 2012/09/26 06:01 [medline]
PHST- 2012/09/24 00:00 [pmc-release]
AID - 1556-276X-7-520 [pii]
AID - 10.1186/1556-276X-7-520 [doi]
PST - epublish
SO  - Nanoscale Res Lett. 2012 Sep 24;7(1):520. doi: 10.1186/1556-276X-7-520.