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Condensed Matter > Strongly Correlated Electrons

arXiv:1301.2896 (cond-mat)
[Submitted on 14 Jan 2013]

Title:Far-infrared optical conductivity of CeCu2Si2

Authors:J. Sichelschmidt, A. Herzog, H.S. Jeevan, C. Geibel, F. Steglich, T. Iizuka, S. Kimura
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Abstract:Journal ref.: J. Phys.: Condens. Matter 25, 065602 (2013): We investigated the optical reflectivity of the heavy-fermion metal CeCu2Si2 in the energy range 3 meV - 30 eV for temperatures between 4K - 300K. The results for the charge dynamics indicate a behavior that is expected for the formation of a coherent heavy quasiparticle state: Upon cooling the spectra of the optical conductivity indicate a narrowing of the coherent response. Below temperatures of 30 K a considerable suppression of conductivity evolves below a peak structure at 13 meV. We assign this gap-like feature to strong electron correlations due to the 4f-conduction electron hybridization.
Comments: 7 pages, 3 figures
Subjects: Strongly Correlated Electrons (cond-mat.str-el); Superconductivity (cond-mat.supr-con)
Cite as: arXiv:1301.2896 [cond-mat.str-el]
  (or arXiv:1301.2896v1 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.1301.2896
Journal reference: J. Phys.: Condens. Matter 25, 065602 (2013)
Related DOI: https://doi.org/10.1088/0953-8984/25/6/065602

Submission history

From: Jörg Sichelschmidt [view email]
[v1] Mon, 14 Jan 2013 09:34:01 UTC (168 KB)
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