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Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Stefania Sandoval, Nitesh Kumar, Dr.  A. Sundaresan, Prof. C. N. R. Rao*, Prof. Amparo Fuertes and Dr. Gerard Tobias*. Chemistry - A European Journal, Volume 20, Issue 38, pages 11999–12003, September 15, 2014

Laterally confined two-dimensional electron gases in self-patterned LaAlO3/SrTiO3 interfaces

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26-06-2012 13-53-00

M. Foerster, R. Bachelet, V. Laukhin, J. Fontcuberta, G. Herranz, and F. Sánchez;

Appl. Phys. Lett. 100, 231607 (2012)

http://dx.doi.org/10.1063/1.4728109 (5 pages)

 


A bottom-up process has been used to engineer the LaAlO3/SrTiO3 interface atomic composition and locally confine the two-dimensional electron gas to lateral sizes in the order of 100 nm. This is achieved by using SrTiO3(001) substrate surfaces with self-patterned chemical termination, which is replicated by the LaAlO3 layer, resulting in a modulated LaO/TiO2 and AlO2/SrO interface composition. We demonstrate the confinement of the conducting interface forming either long-range ordered nanometric stripes or isolated regions. Our results demonstrate that engineering the interface chemical termination is a suitable strategy towards nanoscale lateral confinement of two-dimensional high-mobility systems.

 

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