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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.84]Plasmaron Quasiparticles in Cuprate Superconductors](https://mdr.nims.go.jp/datasets/e57f9f1e-87aa-4bef-9286-98f4c3ca7da7)

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Plasmaron Quasiparticles in Cuprate Superconductors| MANAPrevious Index NextResearch Highlights[Vol. 84]Plasmaron Quasiparticles in Cuprate Superconductors31 Aug, 2023A team led by a researcher at Research Center for Materials Nanoarchitectonics (MANA) delvedinto the interplay of plasma oscillations and electrons in cuprate superconductors, sheddinglight on the emergence of plasmarons--distinct quasiparticles driven by charge fluctuationswithin the system.Metallic systems exhibit plasmons--quanta of collective electron oscillation--as elementary chargeexcitations. Recently, this behavior was confirmed even in high-temperature cuprate superconductors,materials with potential to revolutionize next-generation electronics. However, studying the interplay ofplasmons and electrons in such materials presents unique challenges due to their strongly correlatednature and layered structure.Recently, a research team, including Principal Researcher Hiroyuki Yamase at MANA in Japan, and Dr.Matías Bejas and Prof. Andrés Greco from UNR-CONICET in Rosario, Argentina, focused onunderstanding the influence of plasmons on electron dispersion in cuprates, leading to the discovery ofintriguing quasiparticles called "plasmarons" in these materials."Unlike phonons and magnetic fluctuations, plasmons in cuprates do not manifest themselves as kinks inthe electron dispersion. Instead, they give rise to plasmarons, which are generated by bosonicfluctuations associated with the local constraint imposed by strong electron correlations rather than theusual charge-density fluctuations," explains Dr. Yamase. This finding highlights the distinct nature ofplasmarons in cuprate superconductors.The researchers found that the optical plasmon is responsible for the emergence of plasmarons, formingan additional band in the one-particle excitation spectrum. Remarkably, the plasmarons predicted incuprates exhibit similarities to those discussed in other metallic systems, including alkali metals,ResearchQuantum Materials FieldNanomaterials FieldResearch SupportResearch HighlightsHot TopicsHome  > Research  > Research Highlights  > Vol. 84 Plasmaron Quasiparticles in Cu･･･About MANA Research People News Room Outreach Employment AlumniSite Map Contact Us Access to MANA Website System Requirements   Text size  Standard Large  Japanese Page2024/07/16 13:38 Plasmaron Quasiparticles in Cuprate Superconductors| MANAhttps://www.nims.go.jp/mana/research/highlights/vol84.html 1/3https://www.nims.go.jp/mana/research/highlights/vol83.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol85.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/research/quantum_material.htmlhttps://www.nims.go.jp/mana/research/nano_material.htmlhttps://www.nims.go.jp/mana/research/researcher_support.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/hottopics/index.htmlhttps://www.nims.go.jp/mana/jp/index.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttp://www.jsps.go.jp/english/e-toplevel/http://www.jsps.go.jp/english/e-toplevel/https://www.nims.go.jp/mana/index.htmlhttps://www.nims.go.jp/mana/index.htmlhttps://www.nims.go.jp/mana/about/index.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/member/index.htmlhttps://www.nims.go.jp/mana/news_room/2024.htmlhttps://www.nims.go.jp/mana/pror/index.htmlhttps://www.nims.go.jp/mana/recruit/index.htmlhttps://www.nims.go.jp/mana/alumni/index.htmlhttps://www.nims.go.jp/mana/siteinfo/sitemap.htmlhttps://www.nims.go.jp/mana/siteinfo/inquiry.htmlhttps://www.nims.go.jp/mana/siteinfo/access.htmlhttps://www.nims.go.jp/mana/siteinfo/accessibility.htmlhttps://www.nims.go.jp/mana/jp/research/highlights/vol84.htmlgraphene, monolayer transition-metal dichalcogenides, semiconductors, diamond, and SrIrO3 films. Thissuggests the general applicability of the concept of plasmarons in metallic systems beyond cuprates,meaning the findings could be applied to a plethora of new metallic quantum systems."The insights gained from this research will have significant implications for engineering the bandstructure in metallic quantum materials," highlights Dr. Yamase.In conclusion, understanding the interplay between plasmons and electrons, particularly the emergenceof plasmarons, can provide valuable knowledge for manipulating and tailoring the properties of metallicsystems and designing new materials for novel applications.Reference“Plasmarons in high-temperature cuprate superconductors”Hiroyuki Yamase, Matías Bejas, and Andrés GrecoJournal: Communications Physics 6, 168 (July 08, 2023)DOI : 10.1038/s42005-023-01276-zAffiliationsResearch Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science(NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, JapanFacultad de Ciencias Exactas, Ingeniería y Agrimensura and Instituto de Física Rosario (UNR-CONICET),Avenida Pellegrini 250, 2000, Rosario, ArgentinaContact informationResearch Center for Materials Nanoarchitectonics (MANA)National Institute for Materials Science1-1 Namiki, Tsukuba, Ibaraki 305-0044 JapanPhone: +81-29-860-4710E-mail: mana-pr[AT]nims.go.jpTo receive our e-mail newsletter “MANA Research Highlights”, please send an e-mail with "MANA ResearchHighlights request” in the subject line or main text to the following address: mana-pr_at_nims.go.jp *Pleasechange "_at_ " in the email address to @.Page Top2024/07/16 13:38 Plasmaron Quasiparticles in Cuprate Superconductors| MANAhttps://www.nims.go.jp/mana/research/highlights/vol84.html 2/3https://samurai.nims.go.jp/profiles/yamase_hiroyuki?locale=enhttps://doi.org/10.1038/s42005-023-01276-zhttps://www.nims.go.jp/eng/research/mana/index.htmlhttps://web.fceia.unr.edu.ar/es/http://www.nims.go.jp/eng/index.htmlhttp://www.nims.go.jp/eng/index.htmlhttps://www.jsps.go.jp/english/e-toplevel/index.htmlhttps://www.jsps.go.jp/english/e-toplevel/index.htmlhttp://www.nims.go.jp/icys/http://www.nims.go.jp/icys/https://samurai.nims.go.jp/?locale=enhttps://samurai.nims.go.jp/?locale=enhttps://www.tandfonline.com/toc/tsta20/currenthttps://www.tandfonline.com/toc/tsta20/currenthttps://www.facebook.com/wpi.mana/https://www.facebook.com/wpi.mana/https://twitter.com/wpi_manahttps://twitter.com/wpi_manahttps://www.youtube.com/channel/UCVSuGvDIrL-ZAzpaPVipslwhttps://www.youtube.com/channel/UCVSuGvDIrL-ZAzpaPVipslwResearch Center for Materials Nanoarchitectonics (MANA)National Institute for Materials Science (NIMS)1-1 Namiki Tsukuba, Ibaraki 305-0044 JAPAN+81-29-860-4709E-mail: mana[AT]nims.go.jpCopyright © National Institute for Materials Science. All rights reserved.2024/07/16 13:38 Plasmaron Quasiparticles in Cuprate Superconductors| MANAhttps://www.nims.go.jp/mana/research/highlights/vol84.html 3/3