講演情報
[8a-E207-6]Electrical detection of spin-flip transition in metal/Ising-type antiferromagnet Na5Co15.5Te6O36 heterostructure
〇(DC)Hirotsugu Tagami1, Takuya Kawada1, Yuki Shiomi1 (1.Dept. of Basic Science, The Univ. of Tokyo)
キーワード：
spintronics、magnetoresistance
In antiferromagnetic spintronics, one of the most established methods for electrically probing magnetic structures is spin Hall magnetoresistance (SMR). While SMR has been successfully used to detect spin-flop transitions, the electrical detection of spin-flip transitions remains largely unexplored. In this work, Pt and Cu thin films were deposited on Na5Co15.5Te6O36 (NCTO), an Ising-type antiferromagnet that undergoes a spin-flip transition driven by strong Ising anisotropy, by DC sputtering. Longitudinal magnetoresistance (LMR) measurements were then performed under a magnetic field applied along the crystallographic c-axis (the Ising easy axis) of NCTO. A clear jump was observed in the LMR at the spin-flip transition field. Comparison of the LMR responses in Pt/NCTO and Cu/NCTO indicates that the observed jump originates from magnetostriction associated with the spin-flip transition. Details will be discussed in the presentation.