Spin filter and spin valve in ferromagnetic graphene

Yu Song, Gang Dai
  • Applied Physics Letters, June 2015, American Institute of Physics
  • DOI: 10.1063/1.4921668

A device operating as simultaneous spin filter and spin valve

What is it about?

Spin filter and spin valve are two building block for spintronics. In this work, we find that a gate-controlled EuO -graphene transistor can function simultaneously as spin filter and spin valve, provided proper gate voltages are applied. The calculation is based on an effective Hamiltonian constructed from the first-principle calculations.

Why is it important?

The finding makes the device a promising candidate for graphene spintronics up to 100K. The constructed Hamiltonian can be widely used for the investigation of quantum transport and electronic structure of EuO-induced ferromagnetic graphene.

Perspectives

Yu Song (Author)

I hope the experimental realization of the proposed novel effects can become reality soon.

The following have contributed to this page: Yu Song