Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-01-21
Phys. Rev. Lett. 94, 026402 (2005)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.94.026402
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.
Katsnelson Mikhail I.
Lichtenstein Alexander I.
Rubtsov Alexei N.
Savkin V. V.
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