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BIBTEX RIS

Electronic structure and quantum criticality in Ba(Fe 1-x-y Co x Mn y ) 2 As 2 , an ARPES study

2013; Institute of Physics; Volume: 103; Issue: 4 Linguagem: Inglês

10.1209/0295-5075/103/47004

ISSN

1286-4854

Autores

E. D. L. Rienks, Thomas Wolf, Klaus Koepernik, I. Avigo, P. Hlawenka, C. Lupulescu, Tiberiu Arion, Friedrich Roth, W. Eberhardt, U. Bovensiepen, J. Fink,

Tópico(s)

Inorganic Chemistry and Materials

Resumo

We used angle-resolved photoemission spectroscopy (ARPES) and density functional theory calculations to study the electronic structure of Ba(Fe 1-x-y CoxMny)2As2 for x=0.06 and 0 ≤ y ≤ 0.07.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.

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