Three dimensional magnetic abacus memory.
Three dimensional magnetic abacus memory.
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三维磁珠算盘记忆
DOI：
10.1038/srep06109
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发表时间：
2014-08-22
影响因子：
4.6
通讯作者：
Hesjedal T
中科院分区：
文献类型：
--
作者：
Zhang S;Zhang J;Baker AA;Wang S;Yu G;Hesjedal T
将非易失性存储单元堆叠成三维矩阵代表了未来磁存储器的强大解决方案。然而，如果大量的位堆叠在彼此之上，则访问存储介质中的数据在技术上是具有挑战性的。本文介绍一种新型的多级非易失性磁存储器--磁算盘。磁性算盘采用了一种新的编码方案，而不是将信息存储在单独的磁性层中，从而不得不分别读出每个磁性层。它的灵感来自第二次量化的想法，同时处理整个堆栈的内存状态。直接读取操作通过测量人工设计的“量化”霍尔电压来实现，每个霍尔电压表示堆叠中的自旋向上和自旋向下层的计数。这种新的存储器系统进一步允许系统的灵活缩放和单元之间的快速通信。磁性算盘为未来的非易失性3D磁性随机存取存储器提供了一种很有前途的方法。
Stacking nonvolatile memory cells into a three-dimensional matrix represents a powerful solution for the future of magnetic memory. However, it is technologically challenging to access the data in the storage medium if large numbers of bits are stacked on top of each other. Here we introduce a new type of multilevel, nonvolatile magnetic memory concept, themagnetic abacus. Instead of storing information in individual magnetic layers, thereby having to read out each magnetic layer separately, the magnetic abacus adopts a new encoding scheme. It is inspired by the idea of second quantisation, dealing with the memory state of the entire stack simultaneously. Direct read operations are implemented by measuring the artificially engineered ‘quantised’ Hall voltage, each representing a count of the spin-up and spin-down layers in the stack. This new memory system further allows for both flexible scaling of the system and fast communication among cells. The magnetic abacus provides a promising approach for future nonvolatile 3D magnetic random access memory.
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影响因子：
4.6
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通讯作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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