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Probing the density of states in EuFe2-xRuxAs2

MPS-Authors
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Hemmida,  M.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Leithe-Jasper,  A.
Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schnelle,  W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Rosner,  H.
Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Sichelschmidt,  J.
Jörg Sichelschmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Hemmida, M., Krug von Nidda, H.-.-A., Günther, A., Loidl, A., Leithe-Jasper, A., Schnelle, W., et al. (2014). Probing the density of states in EuFe2-xRuxAs2. Physical Review B, 90(20): 205105, pp. 1-8. doi:10.1103/PhysRevB.90.205105.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-94E6-D
Abstract
The evolution of the electronic density of states at the Fermi level of intermetallic EuFe2-xRuxAs2 in the whole concentration range ( 0 <= x <= 2) is reported. Systematic electron spin resonance investigations of the Korringa-type Eu spin relaxation in combination with the results of band-structure calculations and magnetic susceptibility measurements can provide a clear picture of how the density of states is reduced by substituting Fe with Ru in EuFe2As2. Moreover, the strength of the exchange coupling between the local Eu and the itinerant spin systems can be estimated consistently with the weak coupling expected for this class of layered compounds.