Simultaneous colossal magnetoresistance and angular magnetoresistance in the antiferromagnetic semiconductor <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>EuSe</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:mr
We report on the discovery of field-induced large colossal magnetoresistance (CMR) of \ensuremath{\sim} \ensuremath{-}${10}^{14}%$ and angular magnetoresistance (AMR) \ensuremath{\sim} ${10}^{14}%$ achieved simultaneously in an antiferromagnetic rare-earth dichalcogenide ${\mathrm{EuSe}}_{2}$. Such intriguing observations are attributed to strong magnetic anisotropy and magnetic-field induced antiferromagnetic to ferromagnetic transition of the localized $\mathrm{E}{\mathrm{u}}^{2+}$ spins, which in turn closes the bandgap by lifting the degeneracy of Se-$5p$ bands near Fermi level. Our density functional theory calculations perfectly replicate the experimental findings based on the Brillouin function and carries transport model. The present work provides a potential simple antiferromagnetic material for achieving angle-sensitive spintronic devices.
Authors
- Yoshiya Uwatoko (ORCID: https://orcid.org/0000-0002-1148-4632)
- Quansheng Wu (ORCID: https://orcid.org/0000-0002-9154-4489)
- Bosen Wang (ORCID: https://orcid.org/0000-0003-0844-6894)
- Qingxin Dong (ORCID: https://orcid.org/0000-0003-0072-9849)
- Jinguang Cheng (ORCID: https://orcid.org/0000-0002-4969-1960)
- Jianping Sun (ORCID: https://orcid.org/0000-0002-2873-6023)
- Genfu Chen (ORCID: https://orcid.org/0000-0003-1859-3062)
- Pengtao Yang (ORCID: https://orcid.org/0000-0001-9397-8734)
- Tong Shi (ORCID: https://orcid.org/0000-0001-6560-0873)
- Ziyi Liu (ORCID: https://orcid.org/0000-0002-5561-3889)
- Zhihao Liu (ORCID: https://orcid.org/0009-0003-5878-3941)
- Yuzhi Wang (ORCID: https://orcid.org/0009-0000-8307-2293)
- Hui Wen
- Zhaoming Tian
Institutions
- Chinese Academy of Sciences (CN)
- Songshan Lake Materials Laboratory (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Institute of Semiconductors (CN)
- Institute of Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Huazhong University of Science and Technology (CN)
- The University of Tokyo (JP)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-08-20
- DOI
- https://doi.org/10.1103/p2c5-r163
- Citations
- 1
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.43