Scholarlink

<p>Due to nonrelativistic altermagnetic spin splitting effect (ASSE), altermagnets can generate time-reversal-odd spin current and spin splitting torque (SST) with spin polarization parallel to the Néel vector. Hence the effective manipulation of SST would provide plenty of opportunities for designable spintronic devices. Here, we achieve electrical control of SST in altermagnetic RuO<sub>2</sub>, based on controllable Néel vector of RuO<sub>2</sub> and Néel vector-dependent generation of SST. To demonstrate the current-induced switching of Néel vector via spin-orbit torque in RuO<sub>2</sub> films, we use electrical transport measurements and X-ray magnetic linear dichroism (XMLD) measurements. The switching of Néel vector to the current direction and resultantly enhanced spin polarization parallel to the Néel vector brings about stronger ASSE-induced spin current. These findings not only enrich our understanding of the properties of altermagnets but also pave the way for high-speed memories and nano-oscillators with excellent controllability and efficiency.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrical manipulation of spin splitting torque in altermagnetic RuO2

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月1日

查看全文
  • Yichi Zhang,
  • Hua Bai,
  • Jiankun Dai,
  • Lei Han,
  • Chong Chen,
  • Shixuan Liang,
  • Yanzhang Cao,
  • Yingying Zhang,
  • Qian Wang,
  • Wenxuan Zhu,
  • Feng Pan,
  • Cheng Song

摘要

Due to nonrelativistic altermagnetic spin splitting effect (ASSE), altermagnets can generate time-reversal-odd spin current and spin splitting torque (SST) with spin polarization parallel to the Néel vector. Hence the effective manipulation of SST would provide plenty of opportunities for designable spintronic devices. Here, we achieve electrical control of SST in altermagnetic RuO2, based on controllable Néel vector of RuO2 and Néel vector-dependent generation of SST. To demonstrate the current-induced switching of Néel vector via spin-orbit torque in RuO2 films, we use electrical transport measurements and X-ray magnetic linear dichroism (XMLD) measurements. The switching of Néel vector to the current direction and resultantly enhanced spin polarization parallel to the Néel vector brings about stronger ASSE-induced spin current. These findings not only enrich our understanding of the properties of altermagnets but also pave the way for high-speed memories and nano-oscillators with excellent controllability and efficiency.