Towards a microscopic description of dimer adsorbates on metallic surfaces

Details Towards a microscopic description of dimer adsorbates on metallic surfaces Towards a microscopic description of dimer adsorbates on metallic surfaces

2008-08-23

arxiv.org/abs/0808.3158v2

Europhysics Letters 85, 47002 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, discussion of calculation of RKKY interaction and connection to NRG included. Extended discussion on calcu

Scientific paper

10.1209/0295-5075/85/47002

Despite the experimental successes of Scanning Tunneling Microscopy (STM) and the interest in more complex magnetic nanostructures, our present understanding and theoretical description of STM spectra of magnetic adatoms is mainly phenomenological and most often ignores many-body effects. Here, we propose a theory which includes a microscopic description of the wave functions of the substrate and magnetic adatoms together with quantum many-body effects. To test our theory, we have computed the STM spectra of magnetic Cobalt monomers and dimers adsorbed on metallic Copper surfaces and succesfully compared our results to recent available experimental data.

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