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- Title
単層近藤格子 CePt<sub>2</sub>/Pt(111) の構造と強相関電子状態.
- Authors
家永紘一郎; 金 聖憲; 宮町俊生; 小森文夫
- Abstract
We study the atomic and electronic structures of the monolayer Kondo lattice CePt2/Pt(111) using scanning tunneling microscopy/spectroscopy (STM/STS). A monolayer (2×2)-CePt2 is formed by depositing Ce atoms on Pt(111) and annealing at 720 K. Atomically resolved STM images reveal that the monolayer (2×2)-CePt2 is protected by a chemically inert topmost Pt4 layer. The quasiparticle interference (QPI) measured on the (2×2) structure indicates a Shockley-type surface state similar to that on Pt(111) with a downward shift due to charge transfer from the underneath CePt2 layer. We discuss a possible two-dimensional coherent Kondo effect (heavy fermion) with the observed STS spectra.
- Publication
Vacuum & Surface Science, 2023, Vol 66, Issue 8, p461
- ISSN
2433-5835
- Publication type
Article
- DOI
10.1380/vss.66.461