Physics of interface: Mott insulator barrier sandwiched between two metallic planes

Details Physics of interface: Mott insulator barrier sandwiched between two metallic planes Physics of interface: Mott insulator barrier sandwiched between two metallic planes

2010-03-24

arxiv.org/abs/1003.4642v3

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 14 figures

Scientific paper

We consider a heterostructure of a metal and a barrier with onsite correlation at half filling using unrestricted Hartree Fock. We find that above a certain value of correlation strength in the barrier planes, the system is a Mott insulator, while below this value the system still behaves like a gapless insulator. The energy spectrum is found to be very novel with the presence of multiple gaps. Thus the system remains non metallic for any finite value of correlation.

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