Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides

A. Martinelli; P. Manfrinetti; A. Provino; Alessandro Genovese; F. Caglieris; G. Lamura; C. Ritter; M. Putti

doi:10.1103/PhysRevLett.118.055701

Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides

A. Martinelli, P. Manfrinetti, A. Provino, Alessandro Genovese, F. Caglieris, G. Lamura, C. Ritter, M. Putti

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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.

Original language	English (US)
Journal	Physical Review Letters
Volume	118
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.118.055701
State	Published - Jan 31 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge the ESRF for synchrotron beam time (proposal HC-1468); A. M. acknowledges Andy Fitch for his kind support and experimental assistance during the data collection at the ID22 beam line of ESRF (proposal HC-1468). This work is partially supported by RIDEIRON project (PRIN No. 2012X3YFZ2).

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10.1103/PhysRevLett.118.055701

https://repository.kaust.edu.sa/bitstream/10754/622943/1/PhysRevLett.118.055701.pdf

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title = "Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides",

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.",

author = "A. Martinelli and P. Manfrinetti and A. Provino and Alessandro Genovese and F. Caglieris and G. Lamura and C. Ritter and M. Putti",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors acknowledge the ESRF for synchrotron beam time (proposal HC-1468); A. M. acknowledges Andy Fitch for his kind support and experimental assistance during the data collection at the ID22 beam line of ESRF (proposal HC-1468). This work is partially supported by RIDEIRON project (PRIN No. 2012X3YFZ2).",

year = "2017",

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doi = "10.1103/PhysRevLett.118.055701",

language = "English (US)",

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T1 - Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides

AU - Martinelli, A.

AU - Manfrinetti, P.

AU - Provino, A.

AU - Genovese, Alessandro

AU - Caglieris, F.

AU - Lamura, G.

AU - Ritter, C.

AU - Putti, M.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors acknowledge the ESRF for synchrotron beam time (proposal HC-1468); A. M. acknowledges Andy Fitch for his kind support and experimental assistance during the data collection at the ID22 beam line of ESRF (proposal HC-1468). This work is partially supported by RIDEIRON project (PRIN No. 2012X3YFZ2).

PY - 2017/1/31

Y1 - 2017/1/31

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10754/622943

UR - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.055701

UR - http://www.scopus.com/inward/record.url?scp=85012874637&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.055701

DO - 10.1103/PhysRevLett.118.055701

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VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

ER -

Experimental Evidence for Static Charge Density Waves in Iron Oxypnictides

Abstract

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