Kondo interaction in FeTe and its potential role in the magnetic order
Abstract Finding d-electron heavy fermion states has been an important topic as the diversity in d-electron materials can lead to many exotic Kondo effect-related phenomena or new states of matter such as correlation-driven topological Kondo insulator. Yet, obtaining direct spectroscopic evidence fo...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-39827-1 |
| _version_ | 1827310164740407296 |
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| author | Younsik Kim Min-Seok Kim Dongwook Kim Minjae Kim Minsoo Kim Cheng-Maw Cheng Joonyoung Choi Saegyeol Jung Donghui Lu Jong Hyuk Kim Soohyun Cho Dongjoon Song Dongjin Oh Li Yu Young Jai Choi Hyeong-Do Kim Jung Hoon Han Younjung Jo Ji Hoon Shim Jungpil Seo Soonsang Huh Changyoung Kim |
| author_facet | Younsik Kim Min-Seok Kim Dongwook Kim Minjae Kim Minsoo Kim Cheng-Maw Cheng Joonyoung Choi Saegyeol Jung Donghui Lu Jong Hyuk Kim Soohyun Cho Dongjoon Song Dongjin Oh Li Yu Young Jai Choi Hyeong-Do Kim Jung Hoon Han Younjung Jo Ji Hoon Shim Jungpil Seo Soonsang Huh Changyoung Kim |
| author_sort | Younsik Kim |
| collection | DOAJ |
| description | Abstract Finding d-electron heavy fermion states has been an important topic as the diversity in d-electron materials can lead to many exotic Kondo effect-related phenomena or new states of matter such as correlation-driven topological Kondo insulator. Yet, obtaining direct spectroscopic evidence for a d-electron heavy fermion system has been elusive to date. Here, we report the observation of Kondo lattice behavior in an antiferromagnetic metal, FeTe, via angle-resolved photoemission spectroscopy, scanning tunneling spectroscopy and transport property measurements. The Kondo lattice behavior is represented by the emergence of a sharp quasiparticle and Fano-type tunneling spectra at low temperatures. The transport property measurements confirm the low-temperature Fermi liquid behavior and reveal successive coherent-incoherent crossover upon increasing temperature. We interpret the Kondo lattice behavior as a result of hybridization between localized Fe 3dxy and itinerant Te 5pz orbitals. Our observations strongly suggest unusual cooperation between Kondo lattice behavior and long-range magnetic order. |
| first_indexed | 2024-03-12T23:22:33Z |
| format | Article |
| id | doaj.art-b24f85ae5d4d4bc6a8e16d844858ff33 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-24T19:55:16Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-b24f85ae5d4d4bc6a8e16d844858ff332024-03-24T12:24:46ZengNature PortfolioNature Communications2041-17232023-07-011411910.1038/s41467-023-39827-1Kondo interaction in FeTe and its potential role in the magnetic orderYounsik Kim0Min-Seok Kim1Dongwook Kim2Minjae Kim3Minsoo Kim4Cheng-Maw Cheng5Joonyoung Choi6Saegyeol Jung7Donghui Lu8Jong Hyuk Kim9Soohyun Cho10Dongjoon Song11Dongjin Oh12Li Yu13Young Jai Choi14Hyeong-Do Kim15Jung Hoon Han16Younjung Jo17Ji Hoon Shim18Jungpil Seo19Soonsang Huh20Changyoung Kim21Center for Correlated Electron Systems, Institute for Basic ScienceDepartment of Emerging Materials Science, DGISTDepartment of Chemistry, Pohang University of Science and Technology (POSTECH)Korea Institute for Advanced StudyCenter for Correlated Electron Systems, Institute for Basic ScienceNational Synchrotron Radiation Research CenterDepartment of Physics, Kyungpook National UniversityCenter for Correlated Electron Systems, Institute for Basic ScienceStanford Synchrotron Radiation Light Source, SLAC National Accelerator LaboratoryDepartment of Physics, Yonsei UniversityCenter for Excellence in Superconducting Electronics, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of SciencesCenter for Correlated Electron Systems, Institute for Basic ScienceCenter for Correlated Electron Systems, Institute for Basic ScienceBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesDepartment of Physics, Yonsei UniversityXFEL Beamline Division, Pohang Accelerator LaboratoryDepartment of Physics, Sungkyunkwan UniversityDepartment of Physics, Kyungpook National UniversityDepartment of Chemistry, Pohang University of Science and Technology (POSTECH)Department of Emerging Materials Science, DGISTCenter for Correlated Electron Systems, Institute for Basic ScienceCenter for Correlated Electron Systems, Institute for Basic ScienceAbstract Finding d-electron heavy fermion states has been an important topic as the diversity in d-electron materials can lead to many exotic Kondo effect-related phenomena or new states of matter such as correlation-driven topological Kondo insulator. Yet, obtaining direct spectroscopic evidence for a d-electron heavy fermion system has been elusive to date. Here, we report the observation of Kondo lattice behavior in an antiferromagnetic metal, FeTe, via angle-resolved photoemission spectroscopy, scanning tunneling spectroscopy and transport property measurements. The Kondo lattice behavior is represented by the emergence of a sharp quasiparticle and Fano-type tunneling spectra at low temperatures. The transport property measurements confirm the low-temperature Fermi liquid behavior and reveal successive coherent-incoherent crossover upon increasing temperature. We interpret the Kondo lattice behavior as a result of hybridization between localized Fe 3dxy and itinerant Te 5pz orbitals. Our observations strongly suggest unusual cooperation between Kondo lattice behavior and long-range magnetic order.https://doi.org/10.1038/s41467-023-39827-1 |
| spellingShingle | Younsik Kim Min-Seok Kim Dongwook Kim Minjae Kim Minsoo Kim Cheng-Maw Cheng Joonyoung Choi Saegyeol Jung Donghui Lu Jong Hyuk Kim Soohyun Cho Dongjoon Song Dongjin Oh Li Yu Young Jai Choi Hyeong-Do Kim Jung Hoon Han Younjung Jo Ji Hoon Shim Jungpil Seo Soonsang Huh Changyoung Kim Kondo interaction in FeTe and its potential role in the magnetic order Nature Communications |
| title | Kondo interaction in FeTe and its potential role in the magnetic order |
| title_full | Kondo interaction in FeTe and its potential role in the magnetic order |
| title_fullStr | Kondo interaction in FeTe and its potential role in the magnetic order |
| title_full_unstemmed | Kondo interaction in FeTe and its potential role in the magnetic order |
| title_short | Kondo interaction in FeTe and its potential role in the magnetic order |
| title_sort | kondo interaction in fete and its potential role in the magnetic order |
| url | https://doi.org/10.1038/s41467-023-39827-1 |
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