Induced magnetism versus Kondo screening in alternating Mott-metal layers

Aleksander Zujev and Pinaki Sengupta
Phys. Rev. B 88, 094415 – Published 12 September 2013

Abstract

We investigate the magnetic properties of a heterostructure comprised of alternating metallic and Mott insulating layers of fermions with varying interlayer hybridization. Results from large-scale quantum Monte Carlo simulations at half-filling show clear evidence of induced magnetism in the metallic layers due to coupling to the Mott insulating layers at small to intermediate values of interlayer hopping. The in-plane magnetism is completely suppressed via a Kondo proximity effect when the coupling between adjacent layers is increased beyond a critical strength. The nature of the phase in the Kondo-like insulating regime is investigated and is shown to be dominated by simultaneous in-plane and interplane short-range correlations.

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  • Received 1 March 2013

DOI:https://doi.org/10.1103/PhysRevB.88.094415

©2013 American Physical Society

Authors & Affiliations

Aleksander Zujev and Pinaki Sengupta

  • School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371

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Issue

Vol. 88, Iss. 9 — 1 September 2013

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