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Differential current perpendicular to plane giant magnetoresistive sensor structure having improved robustness against spin torque noise
Differential current perpendicular to plane giant magnetoresistive sensor structure having improved robustness against spin torque noise
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机译:垂直于平面巨磁阻传感器结构的差分电流具有增强的抗自旋扭矩噪声的鲁棒性
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摘要
A differential giant magnetoresistive sensor for sensing a magnetic signal. The differential sensor has a structure configured to minimize spin torque noise. The differential magnetoresistive sensor includes first and second magnetoresistive sensor elements and a three lead structure including an inner lead sandwiched between the first and second sensor elements and first and second outer leads. each of the sensor elements includes an antiparallel coupled free layer structure with the free layer of each of the sensor elements preferably being positioned near the inner lead. The three lead structure allows sense current to be supplied to the sensor such that electrons travel first through the free layer of each sensor element and then through the pinned layer structure.
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