Patent ID: 7244997
Filing Date: 2007-07-17
Classification: H01L,Y10S

Abstract:
1. An electronic system, comprising a single device and an external magnetic field, said single device having a light emitting portion, a hot electron emitting portion, a magnetically sensitive portion, and an energy barrier, wherein said magnetically sensitive portion includes a first magnetically permeable layer and a second magnetically permeable layer, wherein said energy barrier blocks most thermalized electrons from traveling from said magnetically sensitive portion to said light emitting portion, wherein magnetization state of said first magnetically permeable layer is aligned with magnetization state of said second magnetically permeable layer when said external magnetic field extends in a first direction, and wherein magnetization state of said first magnetically permeable layer is anti-aligned with magnetization state of said second magnetically permeable layer when said external magnetic field extends in a second direction opposite said first direction.