Title:
磁気素子、スキルミオンメモリ、スキルミオンメモリデバイス、固体電子デバイス、データ記録装置、データ処理装置およびデータ通信装置
Document Type and Number:
Japanese Patent JP6637427
Kind Code:
B2
Abstract:
Provided is a magnetic element, a skyrmion memory, and the like that have a nearly infinite endurance (durability) for the number of times data is written and nearly eternal data retention (holding) characteristics, and are capable of writing and erasing at ultra-high speed. For example, provided is a magnetic element capable of generating and erasing a skyrmion, including a magnet shaped as a thin layer and including a structure surrounded by a nonmagnetic material; a current path provided surrounding an end region including an end portion of the magnet, on one surface of the magnet; and a skyrmion sensor that detects the generation and erasing of the skyrmion. With Wm being a width of the magnet and hm being a height of the magnet, a size of the magnet, with the skyrmion of a diameter » being generated, is such that 2» > Wm > »/2 and 2» > hm > »/2. With W being a width of the end region in a direction parallel to the end portion of the magnet and h being a height of the end region in a direction perpendicular to the end portion of the magnet, the end region is such that » ¥ W > »/4 and 2» > h > »/2.
Inventors:
Naoto Naganaga
Yasushi Koishi
Iwasaki Soichi
Kawasaki Masashi
Yoshinori Tokura
Yoshio Kaneko
Yasushi Koishi
Iwasaki Soichi
Kawasaki Masashi
Yoshinori Tokura
Yoshio Kaneko
Application Number:
JP2016546421A
Publication Date:
January 29, 2020
Filing Date:
August 21, 2015
Export Citation:
Assignee:
RIKEN
International Classes:
H01L29/82; G11C11/16; H01L21/8239; H01L27/105; H01L43/08
Domestic Patent References:
| JP2014086470A |
Other References:
Junichi IWASAKI,Colossal Spin Transfer Torque Effect on Skyrmion along the Edge,NANO LETTERS,2014年 8月,Vol.14 No.8,p.4432-4437
小椎八重航,Skyrmionの生成と消去に関する考察,日本物理学会講演概要集,2014年 8月22日,Vol.69 No.2 第3分冊,p.311
望月維人,磁気スキルミオンが示す特異な熱励起・電流誘起ダイナミクス,固体物理,2014年 3月15日,第49巻 第3号,p.25-35
小椎八重航,Skyrmionの生成と消去に関する考察,日本物理学会講演概要集,2014年 8月22日,Vol.69 No.2 第3分冊,p.311
望月維人,磁気スキルミオンが示す特異な熱励起・電流誘起ダイナミクス,固体物理,2014年 3月15日,第49巻 第3号,p.25-35
Attorney, Agent or Firm:
Longhua International Patent Service Corporation