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Correlated adatom trimer on metal surface: A continuous time quantum Monte Carlo study

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arxiv cond-mat/0501515 v1 pith:FKT3S7CK submitted 2005-01-21 cond-mat.str-el

Correlated adatom trimer on metal surface: A continuous time quantum Monte Carlo study

V.V. Savkin , A.N. Rubtsov , M.I. Katsnelson , A.I. Lichtenstein This is my paper
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keywords adatomcarlocontinuousinvestigatedkondomontequantumtime
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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.

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