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Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice

Bilayer honeycomb lattice, with inter-layer tunneling energy, has a parabolic dispersion relation, and the inter-layer hopping can cause the charge imbalance between two sublattices. Here, we investigate the metal-insulator and magnetic phase transitions on the strongly correlated bilayer honeycomb...

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Autores principales: Tao, Hong-Shuai, Chen, Yao-Hua, Lin, Heng-Fu, Liu, Hai-Di, Liu, Wu-Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4064339/
https://www.ncbi.nlm.nih.gov/pubmed/24947369
http://dx.doi.org/10.1038/srep05367
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author Tao, Hong-Shuai
Chen, Yao-Hua
Lin, Heng-Fu
Liu, Hai-Di
Liu, Wu-Ming
author_facet Tao, Hong-Shuai
Chen, Yao-Hua
Lin, Heng-Fu
Liu, Hai-Di
Liu, Wu-Ming
author_sort Tao, Hong-Shuai
collection PubMed
description Bilayer honeycomb lattice, with inter-layer tunneling energy, has a parabolic dispersion relation, and the inter-layer hopping can cause the charge imbalance between two sublattices. Here, we investigate the metal-insulator and magnetic phase transitions on the strongly correlated bilayer honeycomb lattice by cellular dynamical mean-field theory combined with continuous time quantum Monte Carlo method. The procedures of magnetic spontaneous symmetry breaking on dimer and non-dimer sites are different, causing a novel phase transition between normal anti-ferromagnet and layer anti-ferromagnet. The whole phase diagrams about the magnetism, temperature, interaction and inter-layer hopping are obtained. Finally, we propose an experimental protocol to observe these phenomena in future optical lattice experiments.
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spelling pubmed-40643392014-06-23 Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice Tao, Hong-Shuai Chen, Yao-Hua Lin, Heng-Fu Liu, Hai-Di Liu, Wu-Ming Sci Rep Article Bilayer honeycomb lattice, with inter-layer tunneling energy, has a parabolic dispersion relation, and the inter-layer hopping can cause the charge imbalance between two sublattices. Here, we investigate the metal-insulator and magnetic phase transitions on the strongly correlated bilayer honeycomb lattice by cellular dynamical mean-field theory combined with continuous time quantum Monte Carlo method. The procedures of magnetic spontaneous symmetry breaking on dimer and non-dimer sites are different, causing a novel phase transition between normal anti-ferromagnet and layer anti-ferromagnet. The whole phase diagrams about the magnetism, temperature, interaction and inter-layer hopping are obtained. Finally, we propose an experimental protocol to observe these phenomena in future optical lattice experiments. Nature Publishing Group 2014-06-20 /pmc/articles/PMC4064339/ /pubmed/24947369 http://dx.doi.org/10.1038/srep05367 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Tao, Hong-Shuai
Chen, Yao-Hua
Lin, Heng-Fu
Liu, Hai-Di
Liu, Wu-Ming
Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title_full Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title_fullStr Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title_full_unstemmed Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title_short Layer Anti-Ferromagnetism on Bilayer Honeycomb Lattice
title_sort layer anti-ferromagnetism on bilayer honeycomb lattice
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4064339/
https://www.ncbi.nlm.nih.gov/pubmed/24947369
http://dx.doi.org/10.1038/srep05367
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