自旋电子学
范德瓦尔斯力
凝聚态物理
铁磁性
材料科学
兴奋剂
磁电阻
自旋(空气动力学)
磁场
物理
量子力学
分子
热力学
作者
Rajeswari Roy Chowdhury,Chandan Patra,Samik DuttaGupta,Sayooj Satheesh,Shovan Dan,Shunsuke Fukami,R. P. Singh
标识
DOI:10.1103/physrevmaterials.6.014002
摘要
Two-dimensional (2D) van der Waals (vdW) magnets have garnered considerable attention owing to the existence of magnetic order down to atomic dimensions, flexibility towards interface engineering and unconventional magnetoresistive properties, offering an attractive platform to explore novel phenomena and functionalities, prospective for spintronic or quantum information devices. Among the promising candidates, vdW ferromagnet (FM) ${\mathrm{Fe}}_{3}{\mathrm{GeTe}}_{2}$ shows an unusual magnetotransport behavior, tunable by doping at the magnetic (Fe) site, and tentatively arising from complicated underlying spin texture configurations. In this work, we explore an alternative route towards manipulation of magnetotransport properties without directly affecting the magnetic site i.e., by doping at the nonmagnetic (Ge) site of ${\mathrm{Fe}}_{3}(\mathrm{Ge},\mathrm{As}){\mathrm{Te}}_{2}$. Interestingly, doping at the non-magnetic (Ge) site results in an unconventional Hall effect whose strength was considerably modified by increasing As concentration, tentatively attributed to underlying emergent electromagnetic behavior, demonstrating an alternate direction towards tailoring of underlying interactions without perturbing the magnetic (Fe) site in 2D vdW magnetic materials.
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