Charge Density Wave Induction by Spin Density Wave in Iron-Based Superconductors

ORAL

Abstract

We argue that spin density wave (SDW) phase in ferrous superconductors contains charge density wave (CDW) with the modulation momentum that is a double of characteristic momenta of SDW [1]. We discuss symmetry constraints on allowed momenta of CDW generated by coupling to spin modulations. To be specific we considered the CDW that could be realized in Fe-11 (e.g., FeTe) and Fe-122 (e.g., BaFe2As2) compounds. In case of commensurate SDW, the CDW modulation vector is at the Bragg peaks positions and could be revealed by local scanned probes. In case of incommensurate SDW, the CDW is incommensurate and can be seen also by x-ray and elastic neutron scattering. We also discuss observable charge modulation due to CDW formation near defects and twin boundaries.\\[4pt] [1] A. V. Balatsky, D. N. Basov, and Jian-Xin Zhu, PHYSICAL REVIEW B \textbf{82}, 144522 (2010).

*This work was supported by U.S. Department of Energy through LDRD and BES funds, the National Science Foundation under Grant No. PHY05-51164, and the UCOP- 09-027.

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Authors

  • Alexander Balatsky

    • Los Alamos National Laboratory
    • Theoretical Division and Center for Integrated Nano-Technologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
    • LANL
    • Theoretical Division, Los Alamos National Laboratory and Center for Integrated Nanotechnologies, Los Alamos, NM 87545
    • Los Alamos National Lab
    • Theoretical Division, Los Alamos National Laboratory

  • Dmitri Basov

    • UC San Diego

  • Jian-Xin Zhu

    • Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Los Alamos National Lab, Theoretical Division
    • Los Alamos National Laboratory, Los Alamos, NM 87545
    • Theoretical Division, Los Alamos National Laboratory
    • Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545
    • Los Alamos National Laboratory