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

Authors :
Rienks, E. D. L.
Wolf, T.
Koepernik, K.
Avigo, I.
Hlawenka, P.
Lupulescu, C.
Arion, T.
Roth, F.
Eberhardt, W.
Bovensiepen, U.
Fink, J.
Source :
EPL 103, 47004 (2013)
Publication Year :
2013

Abstract

We used angle-resolved photoemission spectroscopy (ARPES) and density functional theory calculations to study the electronic structure of Ba(Fe1-x-yCoxMny)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.<br />Comment: Revised version 5 pages, 3 figures

Details

Database :
arXiv
Journal :
EPL 103, 47004 (2013)
Publication Type :
Report
Accession number :
edsarx.1301.4365
Document Type :
Working Paper
Full Text :
https://doi.org/10.1209/0295-5075/103/47004