A Magnetic Arithmetic Logic Device That Can Realize the Operation Function of Half Adder

An arithmetic logic, half adder technology, applied in the field of spintronics, can solve complex problems, achieve high output ratio, maintain non-volatile effect

Active Publication Date: 2022-08-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to realize more complex computing functions on the premise of reducing the time delay and energy consumption caused by cascading logic gates as much as possible, it is not enough to have only basic Boolean logic gates, and it needs to be further realized on the basis of Boolean logic gates Arithmetic Logic Functions

Method used

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  • A Magnetic Arithmetic Logic Device That Can Realize the Operation Function of Half Adder
  • A Magnetic Arithmetic Logic Device That Can Realize the Operation Function of Half Adder
  • A Magnetic Arithmetic Logic Device That Can Realize the Operation Function of Half Adder

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Experimental program
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Embodiment 1

[0021] like figure 1 As shown, the magnetic half adder includes a magnetic unit part 101 , a differential negative resistance element part 102 , a three-terminal resistance network 103 and two current output channels 104 and 105 . The magnetic unit portion 101 includes two identical magnetic units 111 and 121 therein. MgO / CoFeB / Ta magnetic thin films were grown on thermally oxidized SiO2 / Si substrates by magnetron sputtering and vacuum annealed, and then processed into devices with the shapes shown in 111 and 121 by photolithography and reactive ion etching. Well-contact electrodes are deposited by sputtering on three ends of the device for external connection. Place two identical magnetic units 111 and 121 with figure 1 The illustrated approach is connected in parallel so that the transport properties of both magnetic units contribute to the overall device performance.

[0022] The differential negative resistance element part 102 includes four identical differential negat...

Embodiment 2

[0029] On the basis of the magnetic half adder 100, such as image 3 As shown, in the magnetic half adder 400 integrated with storage and operation, the ammeters 104 and 105 used to measure the output current are replaced with other two magnetic units 404 and 405 with upward magnetization directions, and at the same time, resistances with the magnetic units 404 and 405 are added. The constant value resistors 406 and 407 of the same value are used to compensate for the change in the relative magnitude of the current of each branch caused by the introduction of the magnetic units 404 and 405 .

[0030] The magnetic half adder 400 integrating the storage and computation is connected as shown in the figure, and current is introduced. Since the resistances 406 and 407 balance the influence of the resistances of the magnetic units 404 and 405 , the magnetic half adder 400 with integrated storage and operation can still be realized. figure 1 The half adder operation function of the ...

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Abstract

The present invention disclosed a magnetic calculation logic device that can realize the operation of the semi -added operation function that includes magnetic computing logic devices, including magnetic units, resistance networks, and microcompany negative resistance components;The two sets of electrodes of the magnetic unit of the magnetic unit after parallel and the left and right ends of the two sets of electrodes and resistance networks are connected.The two sets of electrodes and the left and right ends of the resistance network flow through the differential negative resistance elements, and use the magnetization direction as a logical input."And" different or "logical functions of operations.

Description

technical field [0001] The invention relates to the technical field of spintronics, in particular to a magnetic arithmetic logic device capable of realizing the operation function of a half adder. Background technique [0002] Traditional electronic computers are based on the von Neumann architecture, in which the computer's processor and external storage are separated from each other. The increasing computing speed leads to more and more time and energy consumption for the information exchange between the two, which makes the further development of electronic computer encounter a bottleneck. The fusion between storage and computing is expected to break through this bottleneck, and emerging spintronic devices have certain advantages in realizing the integration of storage and computing due to their non-volatile properties and rich electromagnetic transport properties. [0003] Patent No.: 201610804501.4 Invention name: A reconfigurable magnetic logic device and its preparat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/38G06F7/502G11C11/14G11C11/16
CPCG06F7/383G06F7/502G11C11/14G11C11/161Y02D10/00
Inventor 章晓中卢子尧牟鸿铭蒲宇辰熊成悦
Owner TSINGHUA UNIV
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