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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Nature Portfolio
2017
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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) |
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Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 |
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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 |
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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 |
work_keys_str_mv |
AT tatsuogoko restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT carlosjarguello restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT andreashamann restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT thomaswolf restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT minhyealee restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT dmitryreznik restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT alexandermaisuradze restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT rustemkhasanov restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT elveziomorenzoni restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi AT yasutomojuemura restorationofquantumcriticalbehaviorbydisorderinpressuretunedmnfesi |
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1718391601547444224 |