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17 April 2024 |
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Article overview
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Experimental Evidences for Static Charge Density Waves in Iron Oxy-pnictides | A. Martinelli
; P. Manfrinetti
; A. Provino
; A. Genovese
; F. Caglieris
; G. Lamura
; C. Ritter
; M. Putti
; | Date: |
13 Dec 2016 | Abstract: | 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 associated with a modulation
of the atomic positions. Our results add a new component in the physics of
Fe-based superconductors, indicating that the density wave ordering is
charge-driven. | Source: | arXiv, 1612.4105 | Services: | Forum | Review | PDF | Favorites |
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