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Kelvin Probe Force ...
Kelvin Probe Force Microscopy Study of LaAlO3/SrTiO3 Heterointerfaces
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- Popok, Vladimir, 1966 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Chalmers University of Technology, Göteborg
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- Kalaboukhov, Alexei, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Göteborg
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- Gunnarsson, Robert, 1972 (författare)
- Jönköping University,HLK, Ämnesforskning,Hållbar utveckling & naturvetenskapens didaktik
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- Lemenshko, S. (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,NT-MDT Europe B.V., Eindhoven
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- Claeson, Tord, 1938 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Göteborg
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- Winkler, Dag, 1957 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Göteborg
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(creator_code:org_t)
- American Scientific Publishers, 2010
- 2010
- Engelska.
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Ingår i: Journal of Advanced Microscopy Research. - : American Scientific Publishers. - 2156-7581 .- 2156-7573. ; 5:1, s. 26-30
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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https://gup.ub.gu.se...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Surface potential distributions in ultra-thin (0.8-3.9 nm) LaAlO3 layers deposited on SrTiO3 substrates are studied. It is found that the potential distribution evolves from island-like to a homogeneous one with increasing LaAlO3 thickness. It is suggested that the observed islands are caused by a locally enhanced concentration of mobile charge carriers at the interface that is, in turn, related to non-stoichiometry of the layers with thickness bellow 4 unit cells. Transition to a homogeneous potential distribution with increasing LAO thickness (≥4 unit cells) corresponds to the formation of a quasi-2-dimensional electron gas. The results agree with a percolation model explaining the insulator-to-metal transition that occurs at the LaAlO3/SrTiO3 heterointerface.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- LaAlO 3/SrTiO 3 Heterointerface
- Kelvin Probe Force Microscopy
- Kelvin Probe Force Microscopy; LaAlO 3/SrTiO 3 Heterointerface
- Surfaces and interfaces
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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