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Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2)
Searching for heavy fermion (HF) states in non–f-electron systems becomes an interesting issue, especially in the presence of magnetism, and can help explain the physics of complex compounds. Using angle-resolved photoemission spectroscopy, scanning tunneling microscopy, physical properties measurem...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5770166/ https://www.ncbi.nlm.nih.gov/pubmed/29349301 http://dx.doi.org/10.1126/sciadv.aao6791 |
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author | Zhang, Yun Lu, Haiyan Zhu, Xiegang Tan, Shiyong Feng, Wei Liu, Qin Zhang, Wen Chen, Qiuyun Liu, Yi Luo, Xuebing Xie, Donghua Luo, Lizhu Zhang, Zhengjun Lai, Xinchun |
author_facet | Zhang, Yun Lu, Haiyan Zhu, Xiegang Tan, Shiyong Feng, Wei Liu, Qin Zhang, Wen Chen, Qiuyun Liu, Yi Luo, Xuebing Xie, Donghua Luo, Lizhu Zhang, Zhengjun Lai, Xinchun |
author_sort | Zhang, Yun |
collection | PubMed |
description | Searching for heavy fermion (HF) states in non–f-electron systems becomes an interesting issue, especially in the presence of magnetism, and can help explain the physics of complex compounds. Using angle-resolved photoemission spectroscopy, scanning tunneling microscopy, physical properties measurements, and the first-principles calculations, we observe the HF state in a 3d-electron van der Waals ferromagnet, Fe(3)GeTe(2). Upon entering the ferromagnetic state, a massive spectral weight transfer occurs, which results from the exchange splitting. Meanwhile, the Fermi surface volume and effective electron mass are both enhanced. When the temperature drops below a characteristic temperature T*, heavy electrons gradually emerge with further enhanced effective electron mass. The coexistence of ferromagnetism and HF state can be well interpreted by the dual properties (itinerant and localized) of 3d electrons. This work expands the limit of ferromagnetic HF materials from f- to d-electron systems and illustrates the positive correlation between ferromagnetism and HF state in the 3d-electron material, which is quite different from the f-electron systems. |
format | Online Article Text |
id | pubmed-5770166 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-57701662018-01-18 Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) Zhang, Yun Lu, Haiyan Zhu, Xiegang Tan, Shiyong Feng, Wei Liu, Qin Zhang, Wen Chen, Qiuyun Liu, Yi Luo, Xuebing Xie, Donghua Luo, Lizhu Zhang, Zhengjun Lai, Xinchun Sci Adv Research Articles Searching for heavy fermion (HF) states in non–f-electron systems becomes an interesting issue, especially in the presence of magnetism, and can help explain the physics of complex compounds. Using angle-resolved photoemission spectroscopy, scanning tunneling microscopy, physical properties measurements, and the first-principles calculations, we observe the HF state in a 3d-electron van der Waals ferromagnet, Fe(3)GeTe(2). Upon entering the ferromagnetic state, a massive spectral weight transfer occurs, which results from the exchange splitting. Meanwhile, the Fermi surface volume and effective electron mass are both enhanced. When the temperature drops below a characteristic temperature T*, heavy electrons gradually emerge with further enhanced effective electron mass. The coexistence of ferromagnetism and HF state can be well interpreted by the dual properties (itinerant and localized) of 3d electrons. This work expands the limit of ferromagnetic HF materials from f- to d-electron systems and illustrates the positive correlation between ferromagnetism and HF state in the 3d-electron material, which is quite different from the f-electron systems. American Association for the Advancement of Science 2018-01-12 /pmc/articles/PMC5770166/ /pubmed/29349301 http://dx.doi.org/10.1126/sciadv.aao6791 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Zhang, Yun Lu, Haiyan Zhu, Xiegang Tan, Shiyong Feng, Wei Liu, Qin Zhang, Wen Chen, Qiuyun Liu, Yi Luo, Xuebing Xie, Donghua Luo, Lizhu Zhang, Zhengjun Lai, Xinchun Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title_full | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title_fullStr | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title_full_unstemmed | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title_short | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet, Fe(3)GeTe(2) |
title_sort | emergence of kondo lattice behavior in a van der waals itinerant ferromagnet, fe(3)gete(2) |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5770166/ https://www.ncbi.nlm.nih.gov/pubmed/29349301 http://dx.doi.org/10.1126/sciadv.aao6791 |
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