Savkin V V, Rubtsov A N, Katsnelson M I, Lichtenstein A I
Institute of Molecules and Materials, University of Nijmegen, 6525 ED Nijmegen, The Netherlands.
Phys Rev Lett. 2005 Jan 21;94(2):026402. doi: 10.1103/PhysRevLett.94.026402. Epub 2005 Jan 18.
The problem of three interacting Kondo impurities is solved within a numerically exact continuous-time quantum Monte Carlo scheme. A suppression of the Kondo resonance by interatomic exchange interactions for different cluster geometries is investigated. It is shown that a drastic difference between the Heisenberg and Ising cases appears for antiferromagnetically coupled adatoms. The effects of magnetic frustrations in the adatom trimer are investigated, and possible connections with available experimental data are discussed.
在数值精确的连续时间量子蒙特卡罗方案中解决了三个相互作用的近藤杂质问题。研究了不同团簇几何结构下原子间交换相互作用对近藤共振的抑制作用。结果表明，对于反铁磁耦合的吸附原子，海森堡情形和伊辛情形之间存在显著差异。研究了吸附原子三聚体中磁阻挫的影响，并讨论了与现有实验数据可能的联系。
