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Enhanced Magnetism and Anomalous Hall Transport through Two-Dimensional Tungsten Disulfide Interfaces.
- Source :
- Nanomaterials (2079-4991); Feb2023, Vol. 13 Issue 4, p771, 16p
- Publication Year :
- 2023
-
Abstract
- The magnetic proximity effect (MPE) has recently been explored to manipulate interfacial properties of two-dimensional (2D) transition metal dichalcogenide (TMD)/ferromagnet heterostructures for use in spintronics and valleytronics. However, a full understanding of the MPE and its temperature and magnetic field evolution in these systems is lacking. In this study, the MPE has been probed in Pt/WS<subscript>2</subscript>/BPIO (biphase iron oxide, Fe<subscript>3</subscript>O<subscript>4</subscript> and α-Fe<subscript>2</subscript>O<subscript>3</subscript>) heterostructures through a comprehensive investigation of their magnetic and transport properties using magnetometry, four-probe resistivity, and anomalous Hall effect (AHE) measurements. Density functional theory (DFT) calculations are performed to complement the experimental findings. We found that the presence of monolayer WS<subscript>2</subscript> flakes reduces the magnetization of BPIO and hence the total magnetization of Pt/WS<subscript>2</subscript>/BPIO at T > ~120 K—the Verwey transition temperature of Fe<subscript>3</subscript>O<subscript>4</subscript> (T<subscript>V</subscript>). However, an enhanced magnetization is achieved at T < T<subscript>V</subscript>. In the latter case, a comparative analysis of the transport properties of Pt/WS<subscript>2</subscript>/BPIO and Pt/BPIO from AHE measurements reveals ferromagnetic coupling at the WS<subscript>2</subscript>/BPIO interface. Our study forms the foundation for understanding MPE-mediated interfacial properties and paves a new pathway for designing 2D TMD/magnet heterostructures for applications in spintronics, opto-spincaloritronics, and valleytronics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 13
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 162385213
- Full Text :
- https://doi.org/10.3390/nano13040771