Escalating Ferromagnetic Order via Se-Vacancies Near Vanadium in WSe2 Monolayers
© 2022 Wiley-VCH GmbH..
Magnetic order has been proposed to arise from a variety of defects, including vacancies, antisites, and grain boundaries, which are relevant in numerous electronics and spintronics applications. Nevertheless, its magnetism remains controversial due to the lack of structural analysis. The escalation of ferromagnetism in vanadium-doped WSe2 monolayer is herein demonstrated by tailoring complex configurations of Se vacancies (SeVac ) via post heat-treatment. Structural analysis of atomic defects is systematically performed using transmission electron microscopy (TEM), enabled by the monolayer nature. Temperature-dependent magnetoresistance hysteresis ensures enhanced magnetic order after high-temperature heat-treatment, consistent with magnetic domain analysis from magnetic force microscopy (MFM). The vanadium-Se vacancy pairing is a key to promoting ferromagnetism via spin-flip by electron transfer, predicted from density-functional-theory (DFT) calculations. The approach toward nanodefect engineering paves a way to overcome weak magnetic order in diluted magnetic semiconductors (DMSs) for renovating semiconductor spintronics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:34 |
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| Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 34(2022), 10 vom: 01. März, Seite e2106551 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yun, Seok Joon [VerfasserIn] |
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| Links: |
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| Themen: |
2D diluted magnetic semiconductors |
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| Anmerkungen: |
Date Revised 10.03.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/adma.202106551 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM334984971 |
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| 520 | |a © 2022 Wiley-VCH GmbH. | ||
| 520 | |a Magnetic order has been proposed to arise from a variety of defects, including vacancies, antisites, and grain boundaries, which are relevant in numerous electronics and spintronics applications. Nevertheless, its magnetism remains controversial due to the lack of structural analysis. The escalation of ferromagnetism in vanadium-doped WSe2 monolayer is herein demonstrated by tailoring complex configurations of Se vacancies (SeVac ) via post heat-treatment. Structural analysis of atomic defects is systematically performed using transmission electron microscopy (TEM), enabled by the monolayer nature. Temperature-dependent magnetoresistance hysteresis ensures enhanced magnetic order after high-temperature heat-treatment, consistent with magnetic domain analysis from magnetic force microscopy (MFM). The vanadium-Se vacancy pairing is a key to promoting ferromagnetism via spin-flip by electron transfer, predicted from density-functional-theory (DFT) calculations. The approach toward nanodefect engineering paves a way to overcome weak magnetic order in diluted magnetic semiconductors (DMSs) for renovating semiconductor spintronics | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a 2D diluted magnetic semiconductors | |
| 650 | 4 | |a escalation of magnetic moment | |
| 650 | 4 | |a ferromagnetism modulation | |
| 650 | 4 | |a vacancy engineering | |
| 650 | 4 | |a vacancy-dopant pairing | |
| 700 | 1 | |a Cho, Byeong Wook |e verfasserin |4 aut | |
| 700 | 1 | |a Dinesh, Thapa |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Dae Hee |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Yong In |e verfasserin |4 aut | |
| 700 | 1 | |a Jin, Jeong Won |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Sang-Hyeok |e verfasserin |4 aut | |
| 700 | 1 | |a Nguyen, Tuan Dung |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Young-Min |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Ki Kang |e verfasserin |4 aut | |
| 700 | 1 | |a Duong, Dinh Loc |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Seong-Gon |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Young Hee |e verfasserin |4 aut | |
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