Details

Autor(en) / Beteiligte

• Rienks, E. D. L.
• Wolf, T.
• Koepernik, K.
• Avigo, I.
• Hlawenka, P.
• Lupulescu, C.
• Arion, T.
• Roth, F.
• Eberhardt, W.
• Bovensiepen, U.
• Fink, J.

Titel

Electronic structure and quantum criticality in Ba(Fe1-x-y CoxMny)2As2, an ARPES study

Ist Teil von

• Europhysics letters, 2013-08, Vol.103 (4), p.47004P1

Ort / Verlag

Les Ulis: EDP Sciences, IOP Publishing and Società Italiana di Fisica

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We used angle-resolved photoemission spectroscopy (ARPES) and density functional theory calculations to study the electronic structure of for and . From ARPES we derive that the substitution of Fe by Mn does not lead to hole doping, indicating a localization of the induced holes. An evaluation of the measured spectral function does not indicate a diverging effective mass or scattering rate near optimal doping. Thus, the present ARPES results indicate a continuous evolution of the quasiparticle interaction and therefore question previous quantum critical scenarios.