Emergence of Chern metal in a moiré Kondo lattice
A Chern metal is a two-dimensional metallic state of matter carrying chiral edge states. We report the observation of a Chern metal at the onset of the magnetic Kondo breakdown in a frustrated moiré Kondo lattice--angle-aligned MoTe 2 /WSe 2 bilayers. The state is compressible and is manifested by a nearly quantized Hall resistance and a finite longitudinal resistance arising from a bad metallic bulk. We demonstrate the presence of a chiral edge state by nonlocal transport measurements and current-induced quantum anomalous Hall breakdown. Magnetic circular dichroism measurements further reveal a magnetization plateau for the Chern metal before a metamagnetic transition at the Kondo breakdown. Our results open an opportunity for moiré engineering of exotic quantum phases through the interplay between band topology and Kondo interactions.
Authors
- Zui Tao (ORCID: https://orcid.org/0000-0002-0701-825X)
- Kin Fai Mak (ORCID: https://orcid.org/0000-0002-5768-199X)
- Wenjin Zhao (ORCID: https://orcid.org/0000-0003-0016-5684)
- Patrick Knüppel (ORCID: https://orcid.org/0000-0002-6193-3440)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Zhengchao Xia (ORCID: https://orcid.org/0000-0002-3339-8575)
- Yichi Zhang (ORCID: https://orcid.org/0000-0001-8664-586X)
- Yihang Zeng (ORCID: https://orcid.org/0000-0003-2941-5958)
- Zhongdong Han (ORCID: https://orcid.org/0000-0003-3296-5563)
- Bowen Shen (ORCID: https://orcid.org/0000-0002-7913-4786)
Institutions
- National Institute for Materials Science (JP)
- Cornell University (US)
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
Publication Details
- Journal
- Science
- Published
- 2026-10-29
- DOI
- https://doi.org/10.1126/science.adv9181
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00