Single Abrikosov vortices as quantized information bits.
Single Abrikosov vortices as quantized information bits.
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DOI：
10.1038/ncomms9628
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发表时间：
2015-10-12
影响因子：
16.6
通讯作者：
Krasnov VM
中科院分区：
文献类型：
--
作者：
Golod T;Iovan A;Krasnov VM
超导数字器件可以大大降低耗散功率，提高运算速度，在未来的超级计算机中有很好的应用前景。非易失量化状态是实现经典布尔逻辑的理想状态。量子化的阿布里科索夫涡旋代表了超导体中最紧凑的磁性物体，可用于创建高密度数字低温电子学。在这项工作中，我们提供了一个基于abrikosov涡的随机存取存储单元的概念证明，其中单个涡用作信息位。我们演示了高耐力写入操作和使用自旋阀或约瑟夫森结的两种不同的读出方式。这些存储单元的特点是具有介于0和1状态之间的无限磁阻，访问时间短，可扩展到纳米尺寸和极低的写入能量。由于涡旋的量子化性质，这种装置固有的非挥发性和完美的再现性。超导体可以用于未来的超级计算机，因为它们可以大大降低功耗，并促进非易失性量子化状态，这是布尔逻辑的理想选择。在这里，作者提供了一个基于单个Abrikosov涡旋作为比特的概念验证RAM存储器。
Superconducting digital devices can be advantageously used in future supercomputers because they can greatly reduce the dissipation power and increase the speed of operation. Non-volatile quantized states are ideal for the realization of classical Boolean logics. A quantized Abrikosov vortex represents the most compact magnetic object in superconductors, which can be utilized for creation of high-density digital cryoelectronics. In this work we provide a proof of concept for Abrikosov-vortex-based random access memory cell, in which a single vortex is used as an information bit. We demonstrate high-endurance write operation and two different ways of read-out using a spin valve or a Josephson junction. These memory cells are characterized by an infinite magnetoresistance between 0 and 1 states, a short access time, a scalability to nm sizes and an extremely low write energy. Non-volatility and perfect reproducibility are inherent for such a device due to the quantized nature of the vortex. Superconductors can be used in future supercomputers because they can greatly reduce power consumption and facilitate nonvolatile quantized states that are ideal for Boolean logics. Here, the authors provide a proof-of-concept RAM memory based on a single Abrikosov vortex as bit.