Layer-Number-Dependent Magnetism and Anomalous Hall Effect in van der Waals Ferromagnet Fe 5 GeTe 2
Realization of ferromagnetism in the two-dimensional (2D) van der Waals (vdW) crystals opens up a vital route to understand the magnetic ordering in the 2D limit and to design novel spintronics. Here, we report enriched layer-number-dependent magnetotransport properties in the vdW ferromagnet Fe GeT...
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Veröffentlicht in: | Nano letters 2022-12, Vol.22 (24), p.9839-9846 |
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creator | Deng, Yazhou Xiang, Ziji Lei, Bin Zhu, Kejia Mu, Haimen Zhuo, Weizhuang Hua, Xiangyu Wang, Mingjie Wang, Zhengfei Wang, Guopeng Tian, Mingliang Chen, Xianhui |
description | Realization of ferromagnetism in the two-dimensional (2D) van der Waals (vdW) crystals opens up a vital route to understand the magnetic ordering in the 2D limit and to design novel spintronics. Here, we report enriched layer-number-dependent magnetotransport properties in the vdW ferromagnet Fe
GeTe
. By studying the magnetoresistance and anomalous Hall effect (AHE) in nanoflakes with thicknesses down to monolayer, we demonstrate that while the bulk crystals exhibit soft ferromagnetism with an in-plane magnetic anisotropy, hard ferromagnetism develops upon thinning, and a perpendicular eas
-axis anisotropy is realized in bilayer flakes, which is accompanied by a pronounced enhancement of AHE because of extrinsic mechanisms. For the monolayer flakes, the hard ferromagnetism is replaced by spin-glass-like behavior, in accordance with the localization effect in the 2D limit. Our results highlight the thickness-based tunability of the magnetotransport properties in the atomically thin vdW magnets that promises engineering of high-performance spintronic devices. |
doi_str_mv | 10.1021/acs.nanolett.2c02696 |
format | Article |
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GeTe
. By studying the magnetoresistance and anomalous Hall effect (AHE) in nanoflakes with thicknesses down to monolayer, we demonstrate that while the bulk crystals exhibit soft ferromagnetism with an in-plane magnetic anisotropy, hard ferromagnetism develops upon thinning, and a perpendicular eas
-axis anisotropy is realized in bilayer flakes, which is accompanied by a pronounced enhancement of AHE because of extrinsic mechanisms. For the monolayer flakes, the hard ferromagnetism is replaced by spin-glass-like behavior, in accordance with the localization effect in the 2D limit. Our results highlight the thickness-based tunability of the magnetotransport properties in the atomically thin vdW magnets that promises engineering of high-performance spintronic devices.</description><identifier>ISSN: 1530-6984</identifier><identifier>EISSN: 1530-6992</identifier><identifier>DOI: 10.1021/acs.nanolett.2c02696</identifier><identifier>PMID: 36475695</identifier><language>eng</language><publisher>United States</publisher><ispartof>Nano letters, 2022-12, Vol.22 (24), p.9839-9846</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1195-d332593c111759848af2c74d41855dc752f0bd42e484e0a512871345a29c25613</citedby><cites>FETCH-LOGICAL-c1195-d332593c111759848af2c74d41855dc752f0bd42e484e0a512871345a29c25613</cites><orcidid>0000-0001-6947-1407 ; 0000-0002-0788-9725 ; 0000-0001-7132-6591</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,2752,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36475695$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Deng, Yazhou</creatorcontrib><creatorcontrib>Xiang, Ziji</creatorcontrib><creatorcontrib>Lei, Bin</creatorcontrib><creatorcontrib>Zhu, Kejia</creatorcontrib><creatorcontrib>Mu, Haimen</creatorcontrib><creatorcontrib>Zhuo, Weizhuang</creatorcontrib><creatorcontrib>Hua, Xiangyu</creatorcontrib><creatorcontrib>Wang, Mingjie</creatorcontrib><creatorcontrib>Wang, Zhengfei</creatorcontrib><creatorcontrib>Wang, Guopeng</creatorcontrib><creatorcontrib>Tian, Mingliang</creatorcontrib><creatorcontrib>Chen, Xianhui</creatorcontrib><title>Layer-Number-Dependent Magnetism and Anomalous Hall Effect in van der Waals Ferromagnet Fe 5 GeTe 2</title><title>Nano letters</title><addtitle>Nano Lett</addtitle><description>Realization of ferromagnetism in the two-dimensional (2D) van der Waals (vdW) crystals opens up a vital route to understand the magnetic ordering in the 2D limit and to design novel spintronics. Here, we report enriched layer-number-dependent magnetotransport properties in the vdW ferromagnet Fe
GeTe
. By studying the magnetoresistance and anomalous Hall effect (AHE) in nanoflakes with thicknesses down to monolayer, we demonstrate that while the bulk crystals exhibit soft ferromagnetism with an in-plane magnetic anisotropy, hard ferromagnetism develops upon thinning, and a perpendicular eas
-axis anisotropy is realized in bilayer flakes, which is accompanied by a pronounced enhancement of AHE because of extrinsic mechanisms. For the monolayer flakes, the hard ferromagnetism is replaced by spin-glass-like behavior, in accordance with the localization effect in the 2D limit. Our results highlight the thickness-based tunability of the magnetotransport properties in the atomically thin vdW magnets that promises engineering of high-performance spintronic devices.</description><issn>1530-6984</issn><issn>1530-6992</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNo9kNtKAzEQhoMotlbfQCQvsDXH3c1lqT0IVW8qXi7TZFYqu9mSbIW-vSltvZp_mPmG4SPkkbMxZ4I_g41jD75rsO_HwjKRm_yKDLmWLMuNEdf_uVQDchfjD2PMSM1uyUDmqtC50UNiV3DAkL3v200qL7hD79D39A2-Pfbb2FLwjk5810LT7SNdQtPQWV2j7enW01_w1GGgXwBNpHMMIS0eyZSppgtcIxX35KZOY3w41xH5nM_W02W2-li8TierzHJudOakFNrI1PBCp6dLqIUtlFO81NrZQouabZwSqEqFDDQXZcGl0iCMFTrnckTU6a4NXYwB62oXti2EQ8VZdXRWJWfVxVl1dpawpxO2229adP_QRZL8Az9zaVk</recordid><startdate>20221228</startdate><enddate>20221228</enddate><creator>Deng, Yazhou</creator><creator>Xiang, Ziji</creator><creator>Lei, Bin</creator><creator>Zhu, Kejia</creator><creator>Mu, Haimen</creator><creator>Zhuo, Weizhuang</creator><creator>Hua, Xiangyu</creator><creator>Wang, Mingjie</creator><creator>Wang, Zhengfei</creator><creator>Wang, Guopeng</creator><creator>Tian, Mingliang</creator><creator>Chen, Xianhui</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-6947-1407</orcidid><orcidid>https://orcid.org/0000-0002-0788-9725</orcidid><orcidid>https://orcid.org/0000-0001-7132-6591</orcidid></search><sort><creationdate>20221228</creationdate><title>Layer-Number-Dependent Magnetism and Anomalous Hall Effect in van der Waals Ferromagnet Fe 5 GeTe 2</title><author>Deng, Yazhou ; Xiang, Ziji ; Lei, Bin ; Zhu, Kejia ; Mu, Haimen ; Zhuo, Weizhuang ; Hua, Xiangyu ; Wang, Mingjie ; Wang, Zhengfei ; Wang, Guopeng ; Tian, Mingliang ; Chen, Xianhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1195-d332593c111759848af2c74d41855dc752f0bd42e484e0a512871345a29c25613</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Deng, Yazhou</creatorcontrib><creatorcontrib>Xiang, Ziji</creatorcontrib><creatorcontrib>Lei, Bin</creatorcontrib><creatorcontrib>Zhu, Kejia</creatorcontrib><creatorcontrib>Mu, Haimen</creatorcontrib><creatorcontrib>Zhuo, Weizhuang</creatorcontrib><creatorcontrib>Hua, Xiangyu</creatorcontrib><creatorcontrib>Wang, Mingjie</creatorcontrib><creatorcontrib>Wang, Zhengfei</creatorcontrib><creatorcontrib>Wang, Guopeng</creatorcontrib><creatorcontrib>Tian, Mingliang</creatorcontrib><creatorcontrib>Chen, Xianhui</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Nano letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Deng, Yazhou</au><au>Xiang, Ziji</au><au>Lei, Bin</au><au>Zhu, Kejia</au><au>Mu, Haimen</au><au>Zhuo, Weizhuang</au><au>Hua, Xiangyu</au><au>Wang, Mingjie</au><au>Wang, Zhengfei</au><au>Wang, Guopeng</au><au>Tian, Mingliang</au><au>Chen, Xianhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Layer-Number-Dependent Magnetism and Anomalous Hall Effect in van der Waals Ferromagnet Fe 5 GeTe 2</atitle><jtitle>Nano letters</jtitle><addtitle>Nano Lett</addtitle><date>2022-12-28</date><risdate>2022</risdate><volume>22</volume><issue>24</issue><spage>9839</spage><epage>9846</epage><pages>9839-9846</pages><issn>1530-6984</issn><eissn>1530-6992</eissn><abstract>Realization of ferromagnetism in the two-dimensional (2D) van der Waals (vdW) crystals opens up a vital route to understand the magnetic ordering in the 2D limit and to design novel spintronics. Here, we report enriched layer-number-dependent magnetotransport properties in the vdW ferromagnet Fe
GeTe
. By studying the magnetoresistance and anomalous Hall effect (AHE) in nanoflakes with thicknesses down to monolayer, we demonstrate that while the bulk crystals exhibit soft ferromagnetism with an in-plane magnetic anisotropy, hard ferromagnetism develops upon thinning, and a perpendicular eas
-axis anisotropy is realized in bilayer flakes, which is accompanied by a pronounced enhancement of AHE because of extrinsic mechanisms. For the monolayer flakes, the hard ferromagnetism is replaced by spin-glass-like behavior, in accordance with the localization effect in the 2D limit. Our results highlight the thickness-based tunability of the magnetotransport properties in the atomically thin vdW magnets that promises engineering of high-performance spintronic devices.</abstract><cop>United States</cop><pmid>36475695</pmid><doi>10.1021/acs.nanolett.2c02696</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-6947-1407</orcidid><orcidid>https://orcid.org/0000-0002-0788-9725</orcidid><orcidid>https://orcid.org/0000-0001-7132-6591</orcidid></addata></record> |
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title | Layer-Number-Dependent Magnetism and Anomalous Hall Effect in van der Waals Ferromagnet Fe 5 GeTe 2 |
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