Photonic-Crafting of Non-Volatile and Rewritable Antiferromagnetic Spin Textures with Drastic Difference in Electrical Conductivity

Chang Yang Kuo, Yi De Liou, Zhiwei Hu, Sheng Chieh Liao, Huang Ming Tsai, Huang Wen Fu, Chih Yu Hua, Yi Chun Chen, Hong Ji Lin, Arata Tanaka, Chien Te Chen, Jan Chi Yang, Chun Fu Chang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Antiferromagnetic spintronics is an emerging field of non-volatile data storage and information processing. The zero net magnetization and zero stray fields of antiferromagnetic materials eliminate interference between neighbor units, leading to high-density memory integrations. However, this invisible magnetic character at the same time also poses a great challenge in controlling and detecting magnetic states in antiferromagnets. Here, two antiferromagnetic spin states close in energy in strained BiFeO3 thin films at room temperature are discovered. It can be reversibly switched between these two non-volatile antiferromagnetic states by a moderate magnetic field and a non-contact optical approach. Importantly, the conductivity of the areas with each antiferromagnetic textures is drastically different. It is conclusively demonstrated the capability of optical writing and electrical reading of these newly discovered bistable antiferromagnetic states in the BiFeO3 thin films.

Original languageEnglish
Article number2200610
JournalAdvanced Materials
Volume34
Issue number20
DOIs
Publication statusPublished - 2022 May 19

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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