Phase coherent transport in SrTiO3/LaAlO3 interfaces

Details Phase coherent transport in SrTiO3/LaAlO3 interfaces Phase coherent transport in SrTiO3/LaAlO3 interfaces

2010-09-07

arxiv.org/abs/1009.1273v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to Phys. Rev B

Scientific paper

The two dimensional electron gas formed between the two band insulators SrTiO3 and LaAlO3 exhibits a variety of interesting physical properties which make it an appealing material for use in future spintronics and/or quantum computing devices. For this kind of applications electrons have to retain their phase memory for sufficiently long times or length. Using a mesoscopic size device we were able to extract the phase coherence length, and its temperature variation. We find the dephasing rate to have a power law dependence on temperature. The power depends on the temperature range studied and sheet resistance as expected from dephasing due to strong electron-electron interactions.

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