Patent ID: 8730714
Filing Date: 2014-05-20
Classification: G11C,H01L

Abstract:
1. A magneto-resistance storage element, comprising: a first magnetic tunnel junction (MTJ) including a first pinned layer, a first tunnel insulating layer and a first free layer; a second MTJ including a second pinned layer, a second tunnel insulating layer and a second free layer; and a connection layer, wherein the first pinned layer has a first magnetic polarity regardless of current applied to the first pinned layer, the first tunnel insulating layer is arranged on the first pinned layer, the first free layer is arranged on the first tunnel insulating layer and has a magnetic polarity that changes in response to current of a first amount, the second pinned layer is coupled to the first free layer and has the first magnetic polarity regardless of current applied to the first pinned layer, the second tunnel insulating layer is arranged on the second pinned layer, the second free layer is arranged on the second tunnel insulating layer and has a magnetic polarity that changes in response to current of a second amount, the connection layer is arranged to couple the first free layer to the second pinned layer, and wherein when the current of the second amount is smaller than the current of the first amount, the first MTJ stores a bit value of “1” and the second MTJ stores a bit value of “0”.