Spin-resolved spectra of Shiba multiplets from Mn impurities in MgB_2

Details Spin-resolved spectra of Shiba multiplets from Mn impurities in MgB_2 Spin-resolved spectra of Shiba multiplets from Mn impurities in MgB_2

2008-05-06

arxiv.org/abs/0805.0700v1

Phys. Rev. B 77, 174516 (2008)

Physics

Condensed Matter

Superconductivity

11 pages, 9 figures in eps format. accepted for publication in Phys. Rev. B

Scientific paper

We study the effect of magnetic Mn ions on the two-band superconductor MgB_2, and compute both the total and spin resolved scanning tunneling spectrum in the vicinity of the magnetic impurity. We show that when the internal structure of the Mn ion's d-shell is taken into account, multiple Shiba states appear in the spectrum. The presence of these multiplets could alter significantly the overall interpretation of local tunneling spectra for a wide range of superconducting hosts and magnetic impurities.

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