Cargando…
Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal
In spintronics, two-dimensional van der Waals crystals constitute a most promising material class for long-distance spin transport or effective spin manipulation at room temperature. To realize all-vdW-material–based spintronic devices, however, vdW materials with itinerant ferromagnetism at room te...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6968938/ https://www.ncbi.nlm.nih.gov/pubmed/32010775 http://dx.doi.org/10.1126/sciadv.aay8912 |
_version_ | 1783489236248297472 |
---|---|
author | Seo, Junho Kim, Duck Young An, Eun Su Kim, Kyoo Kim, Gi-Yeop Hwang, Soo-Yoon Kim, Dong Wook Jang, Bo Gyu Kim, Heejung Eom, Gyeongsik Seo, Seung Young Stania, Roland Muntwiler, Matthias Lee, Jinwon Watanabe, Kenji Taniguchi, Takashi Jo, Youn Jung Lee, Jieun Min, Byung Il Jo, Moon Ho Yeom, Han Woong Choi, Si-Young Shim, Ji Hoon Kim, Jun Sung |
author_facet | Seo, Junho Kim, Duck Young An, Eun Su Kim, Kyoo Kim, Gi-Yeop Hwang, Soo-Yoon Kim, Dong Wook Jang, Bo Gyu Kim, Heejung Eom, Gyeongsik Seo, Seung Young Stania, Roland Muntwiler, Matthias Lee, Jinwon Watanabe, Kenji Taniguchi, Takashi Jo, Youn Jung Lee, Jieun Min, Byung Il Jo, Moon Ho Yeom, Han Woong Choi, Si-Young Shim, Ji Hoon Kim, Jun Sung |
author_sort | Seo, Junho |
collection | PubMed |
description | In spintronics, two-dimensional van der Waals crystals constitute a most promising material class for long-distance spin transport or effective spin manipulation at room temperature. To realize all-vdW-material–based spintronic devices, however, vdW materials with itinerant ferromagnetism at room temperature are needed for spin current generation and thereby serve as an effective spin source. We report theoretical design and experimental realization of a iron-based vdW material, Fe(4)GeTe(2), showing a nearly room temperature ferromagnetic order, together with a large magnetization and high conductivity. These properties are well retained even in cleaved crystals down to seven layers, with notable improvement in perpendicular magnetic anisotropy. Our findings highlight Fe(4)GeTe(2) and its nanometer-thick crystals as a promising candidate for spin source operation at nearly room temperature and hold promise to further increase T(c) in vdW ferromagnets by theory-guided material discovery. |
format | Online Article Text |
id | pubmed-6968938 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-69689382020-01-31 Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal Seo, Junho Kim, Duck Young An, Eun Su Kim, Kyoo Kim, Gi-Yeop Hwang, Soo-Yoon Kim, Dong Wook Jang, Bo Gyu Kim, Heejung Eom, Gyeongsik Seo, Seung Young Stania, Roland Muntwiler, Matthias Lee, Jinwon Watanabe, Kenji Taniguchi, Takashi Jo, Youn Jung Lee, Jieun Min, Byung Il Jo, Moon Ho Yeom, Han Woong Choi, Si-Young Shim, Ji Hoon Kim, Jun Sung Sci Adv Research Articles In spintronics, two-dimensional van der Waals crystals constitute a most promising material class for long-distance spin transport or effective spin manipulation at room temperature. To realize all-vdW-material–based spintronic devices, however, vdW materials with itinerant ferromagnetism at room temperature are needed for spin current generation and thereby serve as an effective spin source. We report theoretical design and experimental realization of a iron-based vdW material, Fe(4)GeTe(2), showing a nearly room temperature ferromagnetic order, together with a large magnetization and high conductivity. These properties are well retained even in cleaved crystals down to seven layers, with notable improvement in perpendicular magnetic anisotropy. Our findings highlight Fe(4)GeTe(2) and its nanometer-thick crystals as a promising candidate for spin source operation at nearly room temperature and hold promise to further increase T(c) in vdW ferromagnets by theory-guided material discovery. American Association for the Advancement of Science 2020-01-17 /pmc/articles/PMC6968938/ /pubmed/32010775 http://dx.doi.org/10.1126/sciadv.aay8912 Text en Copyright © 2020 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 Seo, Junho Kim, Duck Young An, Eun Su Kim, Kyoo Kim, Gi-Yeop Hwang, Soo-Yoon Kim, Dong Wook Jang, Bo Gyu Kim, Heejung Eom, Gyeongsik Seo, Seung Young Stania, Roland Muntwiler, Matthias Lee, Jinwon Watanabe, Kenji Taniguchi, Takashi Jo, Youn Jung Lee, Jieun Min, Byung Il Jo, Moon Ho Yeom, Han Woong Choi, Si-Young Shim, Ji Hoon Kim, Jun Sung Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title | Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title_full | Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title_fullStr | Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title_full_unstemmed | Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title_short | Nearly room temperature ferromagnetism in a magnetic metal-rich van der Waals metal |
title_sort | nearly room temperature ferromagnetism in a magnetic metal-rich van der waals metal |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6968938/ https://www.ncbi.nlm.nih.gov/pubmed/32010775 http://dx.doi.org/10.1126/sciadv.aay8912 |
work_keys_str_mv | AT seojunho nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimduckyoung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT aneunsu nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimkyoo nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimgiyeop nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT hwangsooyoon nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimdongwook nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT jangbogyu nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimheejung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT eomgyeongsik nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT seoseungyoung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT staniaroland nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT muntwilermatthias nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT leejinwon nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT watanabekenji nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT taniguchitakashi nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT joyounjung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT leejieun nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT minbyungil nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT jomoonho nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT yeomhanwoong nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT choisiyoung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT shimjihoon nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal AT kimjunsung nearlyroomtemperatureferromagnetisminamagneticmetalrichvanderwaalsmetal |