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Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice

A quantum magnetic state due to magnetic charges is never observed, even though they are treated as quantum mechanical variables in theoretical calculations. Here, the occurrence of a novel quantum disordered state of magnetic charges in a nanoengineered magnetic honeycomb lattice of ultra‐small con...

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Autores principales: Yumnam, George, Chen, Yiyao, Guo, Jiasen, Keum, Jong, Lauter, Valeria, Singh, Deepak Kumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7967061/
https://www.ncbi.nlm.nih.gov/pubmed/33747751
http://dx.doi.org/10.1002/advs.202004103
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author Yumnam, George
Chen, Yiyao
Guo, Jiasen
Keum, Jong
Lauter, Valeria
Singh, Deepak Kumar
author_facet Yumnam, George
Chen, Yiyao
Guo, Jiasen
Keum, Jong
Lauter, Valeria
Singh, Deepak Kumar
author_sort Yumnam, George
collection PubMed
description A quantum magnetic state due to magnetic charges is never observed, even though they are treated as quantum mechanical variables in theoretical calculations. Here, the occurrence of a novel quantum disordered state of magnetic charges in a nanoengineered magnetic honeycomb lattice of ultra‐small connecting elements is demonstrated. The experimental research, performed using spin resolved neutron scattering, reveals a massively degenerate ground state, comprised of low integer and energetically forbidden high integer magnetic charges, that manifests cooperative paramagnetism at low temperature. The system tends to preserve the degenerate configuration even under large magnetic field application. It exemplifies the robustness of disordered correlation of magnetic charges in a 2D honeycomb lattice. The realization of quantum disordered ground state elucidates the dominance of exchange energy, which is enabled due to the nanoscopic magnetic element size in nanoengineered honeycomb. Consequently, an archetypal platform is envisaged to study quantum mechanical phenomena due to emergent magnetic charges.
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spelling pubmed-79670612021-03-19 Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice Yumnam, George Chen, Yiyao Guo, Jiasen Keum, Jong Lauter, Valeria Singh, Deepak Kumar Adv Sci (Weinh) Communications A quantum magnetic state due to magnetic charges is never observed, even though they are treated as quantum mechanical variables in theoretical calculations. Here, the occurrence of a novel quantum disordered state of magnetic charges in a nanoengineered magnetic honeycomb lattice of ultra‐small connecting elements is demonstrated. The experimental research, performed using spin resolved neutron scattering, reveals a massively degenerate ground state, comprised of low integer and energetically forbidden high integer magnetic charges, that manifests cooperative paramagnetism at low temperature. The system tends to preserve the degenerate configuration even under large magnetic field application. It exemplifies the robustness of disordered correlation of magnetic charges in a 2D honeycomb lattice. The realization of quantum disordered ground state elucidates the dominance of exchange energy, which is enabled due to the nanoscopic magnetic element size in nanoengineered honeycomb. Consequently, an archetypal platform is envisaged to study quantum mechanical phenomena due to emergent magnetic charges. John Wiley and Sons Inc. 2021-02-05 /pmc/articles/PMC7967061/ /pubmed/33747751 http://dx.doi.org/10.1002/advs.202004103 Text en © 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Communications
Yumnam, George
Chen, Yiyao
Guo, Jiasen
Keum, Jong
Lauter, Valeria
Singh, Deepak Kumar
Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title_full Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title_fullStr Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title_full_unstemmed Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title_short Quantum Disordered State of Magnetic Charges in Nanoengineered Honeycomb Lattice
title_sort quantum disordered state of magnetic charges in nanoengineered honeycomb lattice
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7967061/
https://www.ncbi.nlm.nih.gov/pubmed/33747751
http://dx.doi.org/10.1002/advs.202004103
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