摘要:
A hetero-BiMOS injection system comprises a MOSFET transistor formed on a substrate and a hetero-bipolar transistor formed within the substrate. The bipolar transistor can be used to inject charge carriers into a floating gate of the MOSFET transistor. This is done by operating the MOSFET transistor to form an inversion layer in its channel region and operating the bipolar transistor to drive minority charge carriers from the substrate into a floating gate of the MOSFET transistor. The substrate provides a silicon emitter and a silicon germanium containing base for the bipolar transistor. The inversion layer provides a silicon collector for the bipolar transistor.
摘要:
A hetero-BiMOS injection system comprises a MOSFET transistor formed on a substrate and a hetero-bipolar transistor formed within the substrate. The bipolar transistor can be used to inject charge carriers into a floating gate of the MOSFET transistor. This is done by operating the MOSFET transistor to form an inversion layer in its channel region and operating the bipolar transistor to drive minority charge carriers from the substrate into a floating gate of the MOSFET transistor. The substrate provides a silicon emitter and a silicon germanium containing base for the bipolar transistor. The inversion layer provides a silicon collector for the bipolar transistor.
摘要:
Perpendicular spin transfer torque memory (STTM) devices with enhanced stability and damping are described. For example, a material layer stack for a magnetic tunneling junction includes a fixed magnetic layer. A dielectric layer is disposed above the fixed magnetic layer. A first free magnetic layer is disposed above the dielectric layer. A second free magnetic layer is magnetically coupled with the first free magnetic layer.
摘要:
Techniques, materials, and circuitry are disclosed which enable low-voltage, embedded memory applications. In one example embodiment, an embedded memory is configured with a bitcell having a memory element and a selector element serially connected between an intersection of a wordline and bitline. The selector element can be implemented, for instance, with any number of crystalline materials that exhibit an S-shaped current-voltage (IV) curve, or that otherwise enables a snapback in the selector voltage after the threshold criteria is exceeded. The snapback of the selector is effectively exploited to accommodate the ON-state voltage of the selector under a given maximum supply voltage, wherein without the snapback, the ON-state voltage would exceed that maximum supply voltage. In some example embodiments, the maximum supply voltage is less than 1 volt (e.g., 0.9 volts or less).
摘要:
An insulating layer is deposited over a transistor structure. The transistor structure comprises a gate electrode over a device layer on a substrate. The transistor structure comprises a first contact region and a second contact region on the device layer at opposite sides of the gate electrode. A trench is formed in the first insulating layer over the first contact region. A metal-insulator phase transition material layer with a S-shaped IV characteristic is deposited in the trench or in the via of the metallization layer above on the source side.
摘要:
A magnetic memory having memory elements each with two magnetic tunneling junction (MTJ) devices is disclosed. The devices in each element are differentially programmed with complementary data. The devices for each element are stacked one above the other so that the element requires no more substrate area than a single MTJ device.
摘要:
Spin transfer torque memory (STTM) devices with half-metals and methods to write and read the devices are described. For example, a magnetic tunneling junction includes a free magnetic layer, a fixed magnetic layer, and a dielectric layer disposed between the free magnetic layer and the fixed magnetic layer. One or both of the free magnetic layer and the fixed magnetic layer includes a half-metal material at an interface with the dielectric layer.
摘要:
Spin transfer torque memory (STTM) devices with half-metals and methods to write and read the devices are described. For example, a magnetic tunneling junction includes a free magnetic layer, a fixed magnetic layer, and a dielectric layer disposed between the free magnetic layer and the fixed magnetic layer. One or both of the free magnetic layer and the fixed magnetic layer includes a half-metal material at an interface with the dielectric layer.
摘要:
Magnetic tunnel junctions (MTJ) suitable for spin transfer torque memory (STTM) devices, include perpendicular magnetic layers and one or more anisotropy enhancing layer(s) separated from a free magnetic layer by a crystallization barrier layer. In embodiments, an anisotropy enhancing layer improves perpendicular orientation of the free magnetic layer while the crystallization barrier improves tunnel magnetoresistance (TMR) ratio with better alignment of crystalline texture of the free magnetic layer with that of a tunneling layer.
摘要:
Techniques, materials, and circuitry are disclosed which enable low-voltage, embedded memory applications. In one example embodiment, an embedded memory is configured with a bitcell having a memory element and a selector element serially connected between an intersection of a wordline and bitline. The selector element can be implemented, for instance, with any number of crystalline materials that exhibit an S-shaped current-voltage (IV) curve, or that otherwise enables a snapback in the selector voltage after the threshold criteria is exceeded. The snapback of the selector is effectively exploited to accommodate the ON-state voltage of the selector under a given maximum supply voltage, wherein without the snapback, the ON-state voltage would exceed that maximum supply voltage. In some example embodiments, the maximum supply voltage is less than 1 volt (e.g., 0.9 volts or less).