Published 2017
| Version v1
Publication
Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides
Description
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.
Additional details
Identifiers
- URL
- http://hdl.handle.net/11567/858897
- URN
- urn:oai:iris.unige.it:11567/858897
Origin repository
- Origin repository
- UNIGE