X. Y. Li, A. Nocera, K. Foyevtsova, G. A. Sawatzky, M. Oudah, N. Murai, M. Kofu, M. Matsuura, H. Tamatsukuri, M. C. Aronson
{"title":"Frustrated spin-1/2 chains in a correlated metal","authors":"X. Y. Li, A. Nocera, K. Foyevtsova, G. A. Sawatzky, M. Oudah, N. Murai, M. Kofu, M. Matsuura, H. Tamatsukuri, M. C. Aronson","doi":"10.1038/s41563-025-02192-z","DOIUrl":null,"url":null,"abstract":"<p>Electronic correlations lead to heavy quasiparticles in three-dimensional (3D) metals, and their collapse can destabilize magnetic moments. It is an open question whether there is an analogous instability in one-dimensional (1D) systems, unanswered due to the lack of metallic spin chain materials. We report neutron scattering measurements and density matrix renormalization group calculations establishing spinons in the correlated metal Ti<sub>4</sub>MnBi<sub>2</sub>, confirming that its magnetism is 1D. Ti<sub>4</sub>MnBi<sub>2</sub> is inherently frustrated, forming near a quantum critical point that separates different phases at temperature <i>T</i> = 0. One-dimensional magnetism dominates at the lowest <i>T</i>, and is barely affected by weak interchain coupling. Ti<sub>4</sub>MnBi<sub>2</sub> is a previously unrecognized metallic spin chain in which 3D conduction electrons become strongly correlated due to their coupling to 1D magnetic moments.</p>","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"17 1","pages":""},"PeriodicalIF":37.2000,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1038/s41563-025-02192-z","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Electronic correlations lead to heavy quasiparticles in three-dimensional (3D) metals, and their collapse can destabilize magnetic moments. It is an open question whether there is an analogous instability in one-dimensional (1D) systems, unanswered due to the lack of metallic spin chain materials. We report neutron scattering measurements and density matrix renormalization group calculations establishing spinons in the correlated metal Ti4MnBi2, confirming that its magnetism is 1D. Ti4MnBi2 is inherently frustrated, forming near a quantum critical point that separates different phases at temperature T = 0. One-dimensional magnetism dominates at the lowest T, and is barely affected by weak interchain coupling. Ti4MnBi2 is a previously unrecognized metallic spin chain in which 3D conduction electrons become strongly correlated due to their coupling to 1D magnetic moments.
期刊介绍：
Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology.
Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines.
Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
