Nonvolatile electrical control of 2D Cr2Ge2Te6 and intrinsic half metallicity in multiferroic hetero-structures. Issue 2 (4th January 2021)

• Record Type: Journal Article
• Authors: Ilyas, Asif; Xiang, Shuling; Chen, Miaogen; Khan, Muhammad Yar; Bai, Hua; He, Pimo; Lu, Yunhao; Deng, Renren
• Is Part Of: Nanoscale. Volume 13:Issue 2(2021)
• Page Start: 1069
• Page End: 1076
• Publication Date: 2021-01-04
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0nr06054b
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : The electrical control of two-dimensional (2D) van der Waals ferromagnets is a step forward for the realization of spintronic devices. Abstract : The electrical control of two-dimensional (2D) van der Waals ferromagnets is a step forward for the realization of spintronic devices. However, using this approach for practical applications remains challenging due to its volatile memory. Herein, we adopt an alternative strategy, where the bistable ferroelectric switches (P↑ and P↓) of Sc2 CO2 (SCO) assist the ferromagnetic states of Cr2 Ge2 Te6 (CGT) in order to achieve non-volatile memories. Moreover, MXene SCO, being an aided layer in multiferroic CGT/SCO hetero-structures, also modifies the electronic properties of CGT to half metal by its polarized P↓ state. In contrast, the P↑ state does not change the semiconducting nature of CGT. Hence, non-volatile, electrical-controlled switching of ferromagnetic CGT can be engineered by the two opposite ferroelectric states of single layer SCO. Importantly, the magnetic easy axis of CGT switches from in-plane to out-of-plane when the direction of electric polarization of SCO is altered from P↓ to P↑.