Patent ID: 8836060
Filing Date: 2014-09-16
Classification: G11C,H01L

Abstract:
1. A spin device comprising: a graphene; a first ferromagnetic electrode and a second electrode that are disposed in electrical contact with the graphene in such a manner as to sandwich the graphene; a third ferromagnetic electrode and a fourth electrode that are disposed apart from the first ferromagnetic electrode and the second electrode and in electrical contact with the graphene, in such a manner as to sandwich the graphene; a current applying portion that applies an electric current between the first ferromagnetic electrode and the second electrode which sandwich the graphene; and a voltage-signal detecting portion that detects spin accumulation information as a voltage signal via the third ferromagnetic electrode and the fourth electrode, the spin accumulation information being generated, by application of the electric current, in a part of the graphene that is sandwiched between the third ferromagnetic electrode and the fourth electrode, wherein the first ferromagnetic electrode and the third ferromagnetic electrode are disposed on the same surface of the graphene, and the second electrode and the fourth electrode are non-magnetic electrodes or ferromagnetic electrodes.