AI Article Synopsis
- The kagome lattice is being studied for its potential to create unique topological phases with strongly interacting electrons, but making 2D materials with these properties is challenging.
- Researchers have successfully grown single-layer iron germanide kagome nanoflakes using a technique called molecular beam epitaxy.
- Their experiments revealed important electronic features, including topological band inversion and edge modes, which suggest potential for future research on unique properties of these materials, like geometric frustration.
Article Abstract
The kagome lattice has attracted intense interest with the promise of realizing topological phases built from strongly interacting electrons. However, fabricating two-dimensional (2D) kagome materials with nontrivial topology is still a key challenge. Here, we report the growth of single-layer iron germanide kagome nanoflakes by molecular beam epitaxy. Using scanning tunneling microscopy/spectroscopy, we unravel the real-space electronic localization of the kagome flat bands. First-principles calculations demonstrate the topological band inversion, suggesting the topological nature of the experimentally observed edge mode. Apart from the intrinsic topological states that potentially host chiral edge modes, the realization of kagome materials in the 2D limit also holds promise for future studies of geometric frustration.
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| http://dx.doi.org/10.1021/acsnano.2c08895 | DOI Listing |
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