Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si

Quantum criticality: Iron aids restoration An exotic quantum state of matter is identified in a new material by researchers in the USA, Switzerland and Germany. Yasutomo Uemura from Columbia University and co-workers observe quantum criticality in a material in which it was previously unseen just by...

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Autores principales: Tatsuo Goko, Carlos J. Arguello, Andreas Hamann, Thomas Wolf, Minhyea Lee, Dmitry Reznik, Alexander Maisuradze, Rustem Khasanov, Elvezio Morenzoni, Yasutomo J. Uemura
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Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/3a0938a7d7504966892cc712c81b9de4
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spelling oai:doaj.org-article:3a0938a7d7504966892cc712c81b9de42021-12-02T14:18:31ZRestoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si10.1038/s41535-017-0049-02397-4648https://doaj.org/article/3a0938a7d7504966892cc712c81b9de42017-08-01T00:00:00Zhttps://doi.org/10.1038/s41535-017-0049-0https://doaj.org/toc/2397-4648Quantum criticality: Iron aids restoration An exotic quantum state of matter is identified in a new material by researchers in the USA, Switzerland and Germany. Yasutomo Uemura from Columbia University and co-workers observe quantum criticality in a material in which it was previously unseen just by adding iron. As pressure is increasingly applied to pure manganese silicon at absolute zero temperature, it can suddenly change from an ordered magnetic state to an unordered one. Uemura et al. now show that a slower continuous, or second-order, transition is observed instead when fifteen percent of the manganese atoms are replaced with iron atoms. This is indicative that a quantum critical point exists at a pressure of between 21 and 23 kilobar. They believe that criticality is restored because the iron atoms introduce disorder into the system.Tatsuo GokoCarlos J. ArguelloAndreas HamannThomas WolfMinhyea LeeDmitry ReznikAlexander MaisuradzeRustem KhasanovElvezio MorenzoniYasutomo J. UemuraNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 2, Iss 1, Pp 1-6 (2017)
institution DOAJ
collection DOAJ
language EN
topic Materials of engineering and construction. Mechanics of materials
TA401-492
Atomic physics. Constitution and properties of matter
QC170-197
spellingShingle Materials of engineering and construction. Mechanics of materials
TA401-492
Atomic physics. Constitution and properties of matter
QC170-197
Tatsuo Goko
Carlos J. Arguello
Andreas Hamann
Thomas Wolf
Minhyea Lee
Dmitry Reznik
Alexander Maisuradze
Rustem Khasanov
Elvezio Morenzoni
Yasutomo J. Uemura
Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
description Quantum criticality: Iron aids restoration An exotic quantum state of matter is identified in a new material by researchers in the USA, Switzerland and Germany. Yasutomo Uemura from Columbia University and co-workers observe quantum criticality in a material in which it was previously unseen just by adding iron. As pressure is increasingly applied to pure manganese silicon at absolute zero temperature, it can suddenly change from an ordered magnetic state to an unordered one. Uemura et al. now show that a slower continuous, or second-order, transition is observed instead when fifteen percent of the manganese atoms are replaced with iron atoms. This is indicative that a quantum critical point exists at a pressure of between 21 and 23 kilobar. They believe that criticality is restored because the iron atoms introduce disorder into the system.
format article
author Tatsuo Goko
Carlos J. Arguello
Andreas Hamann
Thomas Wolf
Minhyea Lee
Dmitry Reznik
Alexander Maisuradze
Rustem Khasanov
Elvezio Morenzoni
Yasutomo J. Uemura
author_facet Tatsuo Goko
Carlos J. Arguello
Andreas Hamann
Thomas Wolf
Minhyea Lee
Dmitry Reznik
Alexander Maisuradze
Rustem Khasanov
Elvezio Morenzoni
Yasutomo J. Uemura
author_sort Tatsuo Goko
title Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
title_short Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
title_full Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
title_fullStr Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
title_full_unstemmed Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
title_sort restoration of quantum critical behavior by disorder in pressure-tuned (mn,fe)si
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/3a0938a7d7504966892cc712c81b9de4
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