Real-Space Imaging of Kondo Screening in a Two-Dimensional O2 Lattice
Real-Space Imaging of Kondo Screening in a Two-Dimensional O2 Lattice
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DOI：
10.1126/science.1205785
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发表时间：
2011-07-15
期刊：
影响因子：
56.9
通讯作者：
Ho, W.
中科院分区：
文献类型：
--
作者：
Jiang, Ying;Zhang, Y. N.;Ho, W.
Kondo晶格系统可以表现出不寻常的多体行为，这是现场Kondo筛分和场间耦合之间相互作用的结果。我们使用扫描隧道显微镜成像了在金重构表面[Au(110)-1x2]上由自组装氧（O-2）分子形成的非常规近藤晶格中的近藤共振。分子沿链吸附的分子间耦合与现场近藤效应之间的相互作用导致了局域和非局域近藤筛选在原子水平上的共存。后者提供了在Au中引起的磁化集体约束的证据，而前者显示了最近邻居O-2分子的近藤云之间的局部“杂交”。
Kondo lattice systems can exhibit unusual many-body behaviors that result from the interplay between onsite Kondo screening and intersite coupling. We used scanning tunneling microscopy to image the Kondo resonance in a nonconventional Kondo lattice formed by self-assembled oxygen (O-2) molecules, which are paramagnetic, on the gold reconstructed surface [Au(110)-1x2]. The interplay between the intermolecular coupling for molecules adsorbed along chains and the onsite Kondo effect leads to the coexistence of both local and nonlocal Kondo screening at the atomic level. The latter provides evidence for collective deconfinement of magnetization induced in Au, whereas the former shows local "hybridization" between the Kondo clouds of nearest-neighbor O-2 molecules.