Ferroelectric control of magnetic coupling of monolayer MnBr2 in semiconducting multiferroic van der Waals heterostructure

Nonvolatile switchable half-metallicity and magnetism in the MXene Hf2MnC2O2/Sc2CO2 multiferroic heterostructure

“…The van der Waals (vdW) heterostructure has attracted much attention for both fundamental science and technological applications, which paves a way for integrating 2D materials with novel physics and functionalities. 21–29 Combining 2D magnetic layers with 2D ferroelectric materials to construct vdW heterostructures, where 2D magnetic and 2D ferroelectric materials maintain their original magnetism and ferroelectricity due to the atomically clean interface, obtaining 2D multiferroics. Moreover, 2D ferroelectric materials hold different work functions at two surfaces, which give rise to different interfacial charge transfer with reversing the direction of electric polarization, offering a platform for tuning the band structure.…”

Ferroelectric polarization tailored spin polarized electronic structure and magnetic anisotropy in two-dimensional ScSi2N4/CuInP2S6 multiferroic heterostructures

“…The recent successful synthesis of van der Waals (vdW) FEs has paved the way for multiferroic heterostructures comprising vdW intrinsic magnets and FEs [14][15][16]. These heterostructures hold the promise of achieving nonvolatile electrical control of ferromagnets by electrically reversing the polarization direction of vdW FEs [17][18][19]. The spontaneous polarization in FEs arises from the breaking of spatial inversion symmetry within the material's internal structure, and external electric fields can be used to switch between polarization states [20].…”

Improved Carrier Separation and Recombination by Ferroelectric Polarization in the CuBiP2Se6/C2N Heterostructure: A Nonadiabatic Molecular Dynamics Study

“…7,19 In particular, the staggered energy band alignment (type II or Zscheme) can significantly inhibit the recombination of photogenerated electron−hole pairs and facilitating electron and hole separation, which is critical to improve photocatalytic efficiency. 20−23 In recent years, various two-dimensional (2D) ferroelectric heterostructures have surged to the forefront of this field because they not only retain the unique characteristics of isolated 2D ferroelectrics material but also show many fascinating physical properties, for example, ferromagnetic− ferroelectric coupling in multiferroic systems, 24,25 ferroelectric Rashba effect induced valley polarization, 26,27 and the ferroelectric quantum spin Hall effect. 28,29 These appealing performances suggest the 2D ferroelectric heterostructure with potential applications ranging from sensors, field-effect transistors (FET), information storage, and optoelectronic devices.…”

“…In recent years, various two-dimensional (2D) ferroelectric heterostructures have surged to the forefront of this field because they not only retain the unique characteristics of isolated 2D ferroelectrics material but also show many fascinating physical properties, for example, ferromagnetic–ferroelectric coupling in multiferroic systems, , ferroelectric Rashba effect induced valley polarization, , and the ferroelectric quantum spin Hall effect. , These appealing performances suggest the 2D ferroelectric heterostructure with potential applications ranging from sensors, field-effect transistors (FET), information storage, and optoelectronic devices. Nevertheless, the microscopic role of ferroelectric polarization in 2D ferroelectric heterostructures photocatalytically is rarely studied.…”