Spin-resolved spectra of Shiba multiplets from Mn impurities inMgB2 | Zendy

Cătălin Paşcu Moca | Zendy; Eugene Demler | Zendy; Boldizsár Jankó | Zendy; Gergely Zaránd | Zendy

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Spin-resolved spectra of Shiba multiplets from Mn impurities inMgB2

Author(s) -

Cătălin Paşcu Moca,

Eugene Demler,

Boldizsár Jankó,

Gergely Zaránd

Publication year - 2008

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.77.174516

Subject(s) - impurity , ion , spectral line , superconductivity , spin (aerodynamics) , quantum tunnelling , condensed matter physics , physics , spectrum (functional analysis) , quantum mechanics , thermodynamics

We study the effect of magnetic Mn ions on the two-band superconductor ${\text{MgB}}_{2}$, 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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