Abstract

The paper presents a theoretical analysis of magnetic graphene in the quantum Hall regime, showing that counterflowing electron and hole edge channels with opposite spin polarization can enable dissipationless spin transport over macroscopic distances. The authors derive expressions for spin polarization of the charge current in non-equilibrated and fully equilibrated edge-channel limits, predict values exceeding 100%, and discuss the role of spin-flip scattering and equilibration length in long-range spin transport.

Abstract

The paper presents a theoretical analysis of magnetic graphene in the quantum Hall regime, showing that counterflowing electron and hole edge channels with opposite spin polarization can enable dissipationless spin transport over macroscopic distances. The authors derive expressions for spin polarization of the charge current in non-equilibrated and fully equilibrated edge-channel limits, predict values exceeding 100%, and discuss the role of spin-flip scattering and equilibration length in long-range spin transport.

Abstract

The paper presents a theoretical analysis of magnetic graphene in the quantum Hall regime, showing that counterflowing electron and hole edge channels with opposite spin polarization can enable dissipationless spin transport over macroscopic distances. The authors derive expressions for spin polarization of the charge current in non-equilibrated and fully equilibrated edge-channel limits, predict values exceeding 100%, and discuss the role of spin-flip scattering and equilibration length in long-range spin transport.

Abstract

The paper presents a theoretical analysis of magnetic graphene in the quantum Hall regime, showing that counterflowing electron and hole edge channels with opposite spin polarization can enable dissipationless spin transport over macroscopic distances. The authors derive expressions for spin polarization of the charge current in non-equilibrated and fully equilibrated edge-channel limits, predict values exceeding 100%, and discuss the role of spin-flip scattering and equilibration length in long-range spin transport.