Atomic and electronic structure of ultra-thin Al/AlOx/Al interfaces

Details Atomic and electronic structure of ultra-thin Al/AlOx/Al interfaces Atomic and electronic structure of ultra-thin Al/AlOx/Al interfaces

2006-08-31

arxiv.org/abs/cond-mat/0608718v1

Surf. Science 601, 4134 (2007)

Physics

Condensed Matter

Materials Science

Presented at the ECOSS24, submitted to the proceeding - special issue of Surf. Science

Scientific paper

10.1016/j.susc.2007.04.056

Interfaces between metals based on AlO$_{x}$ represent the most popular basis for Josephson junctions or, more recently, also for junctions exhibiting substantial tunneling magneto-resistance. We have performed a computational study of possible local geometric structures of such interfaces at the ab-initio DFT/GGA level of approximation to complement recent experimental data on ultra-thin AlO$_{x}$-based interfaces. We present two competing structures that we characterise with their electronic properties: fragmentation and interface energies.

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