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

2010/03/24 by Sanjay Gupta, Gupta, Sanjay, Tribikram Gupta +1
Physics and Astronomy · #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Strongly Correlated Electrons (cond-mat.str-el) #Theoretical and Computational Physics

paper · pdf · doi:10.48550/arxiv.1003.4642

openalex publication_date 2010/03/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

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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