期刊
SCIENCE
卷 352, 期 6289, 页码 1091-1094出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aad4568
关键词
-
资金
- excellence cluster The Hamburg Centre for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale
- Deutsche Forschungsgemeinschaft [GrK 1355]
Topological properties lie at the heart of many fascinating phenomena in solid-state systems such as quantum Hall systems or Chern insulators. The topology of the bands can be captured by the distribution of Berry curvature, which describes the geometry of the eigenstates across the Brillouin zone. Using fermionic ultracold atoms in a hexagonal optical lattice, we engineered the Berry curvature of the Bloch bands using resonant driving and show a full momentum-resolved measurement of the ensuing Berry curvature. Our results pave the way to explore intriguing phases of matter with interactions in topological band structures.
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