Reconfigurable Logic Gate of Quantum-Flux-Parametron Using Magnetic Material
Reconfigurable Logic Gate of Quantum-Flux-Parametron Using Magnetic Material
复制标题
使用磁性材料的量子通量参量管可重构逻辑门
DOI：
10.1109/isec.2015.7383477
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
A. Fujimaki
中科院分区：
文献类型：
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作者：
S. Kurokawa;A. Tsune;H. Ito;S. Taniguchi;K. Ishikawa;M. Tanaka;H. Akaike;A. Fujimaki
我们提出了一种可重构的量子通量参数（QFP）电路，该电路使用磁性材料用于可编程器件，如现场可编程门阵列（FPGA）。三输入多数门是QFP逻辑电路的基本元件。我们通过保持其中一个输入逻辑值分别为0或1来获得双输入与或门。我们使用铁磁薄膜模式沉积在多数栅极的输入接线上，并磁化以施加磁通量。通过改变磁化方向，我们重新配置了栅极的功能。我们制作了可重构的QFP门来演示功能开关，并研究了所需的磁化强度。我们在QFP电路上沉积了70 nm厚、居里温度为110 K的PdNi薄膜，并对其进行了图像化处理。当我们冷却电路时，我们应用了一个外部磁场来磁化PdNi图案。我们成功地获得了磁场在-1800 ~ -1500 μT和-1200 ~ 300 μT范围内的OR和and函数。
We propose reconfigurable quantum-flux-parametron (QFP) circuit using a magnetic material for program devices such as a field-programmable gate array (FPGA). A three-input majority gate is the basic element for QFP logic circuits. We obtain two-input AND or OR gate by keeping one of the inputs logical value of 0 or 1, respectively. We use a ferromagnetic film pattern deposited on the input wiring of the majority gate, and magnetize to apply a magnetic flux. By changing the direction of magnetization, we reconfigure the functions of the gate. We fabricated the reconfigurable QFP gate to demonstrate the function switching, and to investigate the required magnetization strength. We deposited 70- nm thick PdNi film with a Curie temperature of 110 K on the QFP circuits and patterned it. We applied an external magnetic field for magnetizing the PdNi pattern when we cooled the circuit. We successfully obtained OR and AND functions for the magnetic field in a range of -1800 to -1500 μT, and -1200 to 300 μT, respectively.