4.8 Article

Toward Room-Temperature Electrical Control of Magnetic Order in Multiferroic van der Waals Materials

期刊

NANO LETTERS
卷 22, 期 13, 页码 5191-5197

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.2c00930

关键词

multiferroicity; magnetoelectric coupling room temperature; MXene; van der Waals heterostructure

资金

  1. NSFC [T2125004, 12004183, 11774173, 12074188, 51790492, 11974270, 12104518]
  2. Fundamental Research Funds for the Central Universities [30921011214, 30920041115]
  3. Youth Program of NSF of Jiangsu Province [BK20200457]
  4. Startup Grant of Sun Yat-Sen University [74130-18841290]
  5. Hefei National Laboratory for Physical Sciences at the Microscale [KF2020104]
  6. Tianjing Supercomputer Center
  7. Shanghai Supercomputer Center

向作者/读者索取更多资源

This study theoretically predicts the coexistence of ferromagnetic and ferroelectric orders in a 2D transition metal carbide, where the spatial distribution of magnetic moments strongly couples with the electric polarization. Furthermore, an electric-field switching between ferromagnetic and ferrimagnetic orders is achievable by constructing a multiferroic vdW heterostructure based on this material.
Electrical control of magnetic order in van der Waals (vdW) two-dimensional (2D) systems is appealing for high-efficiency and low-dissipation nanospintronic devices. For realistic applications, a vdW 2D material with ferromagnetic (FM) and ferroelectric (FE) orders coexisting and strongly coupling at room temperature is urgently needed. Here we present a potential candidate for nonvolatile electric-field control of magnetic orders at room temperature. Using first-principles calculations, we predict the coexistence of room-temperature FM and FE orders in a 2D transition metal carbide, where the spatial distribution of magnetic moments strongly couples with the orientation of out-of-plane electric polarization. Furthermore, an electric-field switching between interfacial FM and ferrimagnetic orders is realizable through constructing a multiferroic vdW heterostructure based on this material. These findings make a significant step toward realizing room-temperature multiferroicity and strong magnetoelectric coupling in 2D materials.

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