Presentation Information
[11a-E208-5]Effect of antiferromagnetic coupling strength in synthetic free layers on magnetic field response of superparamagnetic tunnel junctions
〇Mototsugu Ohtani1,2, Takuma Kinoshita1,2, Haruna Kaneko1,2, Nuno cacoilo1, Shun Kanai1,2,3,4,5,6, Shunsuke Fukami1,4,7,8 (1.RIEC, Tohoku Univ., 2.Tohoku Univ., 3.WPI-AIMR, Tohoku Univ., 4.CSIS, Tohoku Univ., 5.DEFS, Tohoku Univ., 6.QST, 7.CIES, Tohoku Univ., 8.InaRIS)
Keywords:
Spintronics,Probabilistic computer,Superparamagnetic tunnel junction
Superparamagnetic tunnel junctions (s-MTJs) have attracted attention as core hardware components for probabilistic computers. While s-MTJs with a synthetic antiferromagnetic (SAF) free layer, that exhibit robustness against external magnetic fields, have been proposed for practical application, the factors that determine the external magnetic field response are not yet fully understood.
In this study, we evaluated SAF s-MTJs with different Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction strengths and revealed that RKKY interaction does not affect the external magnetic field response, and that the uncompensated moment of the SAF free layer determines the external magnetic field response. These results provide design insight of SAF s-MTJs.
In this study, we evaluated SAF s-MTJs with different Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction strengths and revealed that RKKY interaction does not affect the external magnetic field response, and that the uncompensated moment of the SAF free layer determines the external magnetic field response. These results provide design insight of SAF s-MTJs.