Abstract

The proposed spin-valve architecture comprises a two-dimensional graphene bilayer encapsulated between ferromagnetic insulating layers of CrBr3. In this configuration, interfacial proximity exchange coupling plays a decisive role in determining the relative magnetization orientations of the graphene layers and modulating the spin-dependent transport characteristics of the heterostructure. Density functional theory (DFT) calculations were employed to investigate the spin-resolved electronic structure and interlayer coupling effects. The results reveal an induced band gap of approximately 56.87 meV at specific high-symmetry k-points, which becomes particularly prominent in the antiparallel magnetic configuration. This magnetization-dependent band modulation highlights the potential of the CrBr₃/graphene-bilayer/CrBr₃ heterostructure as an efficient spin-filtering element in next-generation spintronic devices.

Abstract

The proposed spin-valve architecture comprises a two-dimensional graphene bilayer encapsulated between ferromagnetic insulating layers of CrBr3. In this configuration, interfacial proximity exchange coupling plays a decisive role in determining the relative magnetization orientations of the graphene layers and modulating the spin-dependent transport characteristics of the heterostructure. Density functional theory (DFT) calculations were employed to investigate the spin-resolved electronic structure and interlayer coupling effects. The results reveal an induced band gap of approximately 56.87 meV at specific high-symmetry k-points, which becomes particularly prominent in the antiparallel magnetic configuration. This magnetization-dependent band modulation highlights the potential of the CrBr₃/graphene-bilayer/CrBr₃ heterostructure as an efficient spin-filtering element in next-generation spintronic devices.

Abstract

The proposed spin-valve architecture comprises a two-dimensional graphene bilayer encapsulated between ferromagnetic insulating layers of CrBr3. In this configuration, interfacial proximity exchange coupling plays a decisive role in determining the relative magnetization orientations of the graphene layers and modulating the spin-dependent transport characteristics of the heterostructure. Density functional theory (DFT) calculations were employed to investigate the spin-resolved electronic structure and interlayer coupling effects. The results reveal an induced band gap of approximately 56.87 meV at specific high-symmetry k-points, which becomes particularly prominent in the antiparallel magnetic configuration. This magnetization-dependent band modulation highlights the potential of the CrBr₃/graphene-bilayer/CrBr₃ heterostructure as an efficient spin-filtering element in next-generation spintronic devices.

Abstract

The proposed spin-valve architecture comprises a two-dimensional graphene bilayer encapsulated between ferromagnetic insulating layers of CrBr3. In this configuration, interfacial proximity exchange coupling plays a decisive role in determining the relative magnetization orientations of the graphene layers and modulating the spin-dependent transport characteristics of the heterostructure. Density functional theory (DFT) calculations were employed to investigate the spin-resolved electronic structure and interlayer coupling effects. The results reveal an induced band gap of approximately 56.87 meV at specific high-symmetry k-points, which becomes particularly prominent in the antiparallel magnetic configuration. This magnetization-dependent band modulation highlights the potential of the CrBr₃/graphene-bilayer/CrBr₃ heterostructure as an efficient spin-filtering element in next-generation spintronic devices.