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Distribution of Optical Spectral Weight in Detwinned Ba(Fe1−x Co x )2As2

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Abstract

We analyze our recent optical investigation on detwinned Ba(Fe1−x Co x )2As2 materials in the underdoped regime from the perspective of the spectral weight (SW) distribution. We identify its evolution for both in-plane crystallographic axes as a function of temperature across the structural tetragonal-orthorhombic phase transition. We can thus disentangle the anisotropy of SW occurring in the orthorhombic magnetic phase, from where we identify the relevant energy scales arising from interactions with spin fluctuations.

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Acknowledgements

The author wishes to thank M. Dressel, L. Benfatto, A. Millis, D. Basov, M. Qazilbash and A. Chubukov for fruitful discussions. This work has been supported by the Swiss National Foundation for the Scientific Research within the NCCR MaNEP pool.

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Authors and Affiliations

  1. Laboratorium für Festkörperphysik, ETH–Zürich, 8093, Zürich, Switzerland

    A. Dusza, A. Lucarelli & L. Degiorgi

  2. Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, CA, 94305-4045, USA

    J.-H. Chu & I. R. Fisher

  3. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA

    J.-H. Chu & I. R. Fisher

Authors
  1. A. Dusza
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  2. A. Lucarelli
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  3. J.-H. Chu
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  4. I. R. Fisher
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  5. L. Degiorgi
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Correspondence to L. Degiorgi.

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Dusza, A., Lucarelli, A., Chu, JH. et al. Distribution of Optical Spectral Weight in Detwinned Ba(Fe1−x Co x )2As2 . J Supercond Nov Magn 26, 2603–2606 (2013). https://doi.org/10.1007/s10948-013-2143-2

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  • DOI: https://doi.org/10.1007/s10948-013-2143-2

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