Novel Technique of High-Speed Magnetic Recording Based on Manipulating Pinning Layer in Magnetic Tunnel Junction-Based Memory by Using Terahertz Magnon Laser

Author(s)/Presenter(s):
Library Content Type:
Publish Date: 
Wednesday, September 23, 2020
Event Name: 
Event Track:
Abstract: 

An apparatus for novel technique of high-speed magnetic recording based on manipulating pinning layer in magnetic tunnel junction-based memory by using terahertz magnon laser is provided. The apparatus comprises a terahertz writing head configured to generate a tunable terahertz writing signal and a memory cell including a spacer that comprises a thickness configured based on Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. The memory cell comprises two separate memory states: a first binary state and a second binary state; wherein the first binary memory state corresponds to a ferromagnetic sign of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction corresponding to a first thickness value of the spacer; and wherein the second binary memory state corresponds to an antiferromagnetic sign of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction corresponding to a second thickness value of the spacer. The thickness of the spacer is manipulated by the tunable terahertz writing signal.

Learning Objectives

Physics of Terahertz Magnon Laser,Manipulating of Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction by using Terahertz radiation,An apparatus for novel technique of high-speed magnetic recording based on manipulating pinning layer in magnetic tunnel junction-based memory by using Terahertz Magnon Laser

Watch video: