Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides.

  title={Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides.},
  author={Alberto Martinelli and Pietro Manfrinetti and Alessia Provino and Alessandro Genovese and Federico Caglieris and G. Lamura and Clemens Ritter and Marina Putti},
  journal={Physical review letters},
  volume={118 5},
In this Letter we report high-resolution synchrotron x-ray powder diffraction and transmission electron microscope analysis of Mn-substituted LaFeAsO samples, demonstrating that a static incommensurate modulated structure develops across the low-temperature orthorhombic phase, whose modulation wave vector depends on the Mn content. The incommensurate structural distortion is likely originating from a charge-density-wave instability, a periodic modulation of the density of conduction electrons… 
11 Citations

Figures and Tables from this paper

Fast recovery of the pristine magnetic and structural phases in superconducting LaFeAsO0.89F0.11 by Mn/Fe substitution

The results show that a very tiny amount of Mn, of the order of 0.1%, is enough to destroy superconductivity and to recover at low temperatures both the magnetic ground state and the orthorhombic structure of the pristine LaFeAsO parent compound.

Iron-based superconductors: tales from the nuclei

High-temperature superconductivity in Fe-based pnictides and chalcogenides has been one of the most significant recent discoveries in condensed matter physics and has attracted remarkable attention

Charge Density Wave and Spin Density Wave in Two-Orbital Model for Iron-Based Superconductors

We present a mean-field theoretical model study for the coexistence of the two strongly interacting charge density wave (CDW) and spin density wave (SDW) for iron-based superconductors in the

Dimensionality, nematicity and superconductivity in Fe-based systems

Abstract Study of Fe based compounds have drawn much attention due to the discovery of superconductivity as well as many other exotic electronic properties. Here, we review some of our works in these

Structural investigation of the Sm(Fe1−xRux)As(O0.85F0.15) system: a synchrotron x-ray powder diffraction study

  • A. Martinelli
  • Materials Science, Physics
    Superconductor Science and Technology
  • 2018
The structural and microstructural properties of the Sm(Fe1−xRux)As(O0.85F0.15) system were investigated by means of high-resolution synchrotron x-ray powder diffraction between 10 and 300 K. The

The local structure and magnetic correlations in La(Fe1-Mn )AsO system

The huge effect of Mn substitution on the structural and magnetic properties of LaFeAsO: the La(Fe,Mn)AsO system

Several investigations ascertained that the structural transformation in LnFeAsO compounds (Ln: lanthanide) cannot be ascribed to lattice degrees of freedom, but rather to electronic or spin ones, thus hindering the structural transformed and the magnetic transition.

Mn substitution effect on the local structure of La(Fe1−x Mn x )AsO studied by temperature dependent x-ray absorption measurements

The results suggest that local atomic displacements by Mn substitution inducing increased iron local magnetic moment that should be the main reason for its dramatic effect in iron-based superconductors.

Structural strain and competition between charge density wave and superconductivity in La(Fe,Mn)As(O0.89F0.11) compounds

Selected members of the $\mathrm{La}(\mathrm{Fe},\mathrm{Mn})\mathrm{As}({\mathrm{O}}_{0.89}{\mathrm{F}}_{0.11})$ system were analyzed using high-resolution synchrotron x-ray powder diffraction. The

Mn-induced Fermi-surface reconstruction in the SmFeAsO parent compound

The effects of Fe-to-Mn substitution in the non-superconducting Sm-1111 pnictide parent compound is addressed via a comparative study of SmFe.



Elucidating Complex Charge Density Wave Structures in Low-Dimensional Materials by Scanning Tunneling Microscopy

An important goal of condensed matter research is to understand how microscopic or atomic level structural and electronic characteristics of a solid determine observable properties like

Stripe Liquid, Crystal, and Glass Phases of Doped Antiferromagnets

A largely descriptive survey is given of the ordered phases of doped antiferromagnets, and of the long wavelength properties that can be derived from an order-parameter theory. In particular, we show

in Stripes

  • and Related Phenomena, edited by A. Bianconi and N. L. Saini
  • 2000


  • Rev. B 89, 134503
  • 2014

New J

  • Phys. 11, 025011
  • 2009

in Advances in the Crystallographic

  • and Microstructural Analysis of Charge Density Wave Modulated Crystals, edited by F. W. Boswell and J. Craig Bennett
  • 1999


  • Rev. B 78, 020501 (R)
  • 2008


  • Sci. Technol. 14, R1 (2001). PRL 118, 055701
  • 2017


  • Rev. Lett. 101, 057003
  • 2008