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IrOx–carbon nanotube hybrids: A nanostructured material for electrodes with increased charge capacity in neural systems

IrOx–carbon nanotube hybrids: A nanostructured material for electrodes with increased charge capacity in neural systems

Acta Biomaterialia, Volume 10, Issue 10, October 2014, Pages 4548–4558.     Nina M. Carretero, Mathieu P. Lichtenstein, Estela Pérez, Laura Cabana, Cristina Suñol, Nieves Casañ-Pastor

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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