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Condens. Matter 2017, 2(3), 26; https://doi.org/10.3390/condmat2030026

X-Rays Writing/Reading of Charge Density Waves in the CuO2 Plane of a Simple Cuprate Superconductor

1
Institute of Crystallography, CNR, Monterotondo, 00015 Roma, Italy
2
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
3
Department of Physics, Harvard University, Cambridge, MA 02138, USA
4
Fondazione Santa Lucia I.R.C.C.S., 00179 Roma, Italy
5
Rome International Center of Materials Science (RICMASS), 00185 Roma, Italy
*
Author to whom correspondence should be addressed.
Received: 4 July 2017 / Revised: 2 August 2017 / Accepted: 8 August 2017 / Published: 11 August 2017
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Abstract

It is now well established that superconductivity in cuprates competes with charge modulations giving an electronic phase separation at nanoscale. More specifically, superconducting electronic current takes root in the available free space left by electronic charge ordered domains, called charge density wave (CDW) puddles. This means that CDW domain arrangement plays a fundamental role in the mechanism of high temperature superconductivity in cuprates. Here we report about the possibility of controlling the population and spatial organization of the charge density wave puddles in a single crystal La2CuO4+y through X-ray illumination and thermal treatments. We apply a pump-probe method—based on X-ray illumination as a pump and X-ray diffraction as a probe—setting a writing/reading procedure of CDW puddles. Our findings are expected to allow new routes for advanced design and manipulation of superconducting pathways in new electronics. View Full-Text
Keywords: X-ray diffraction; synchrotron radiation; charge density waves; high temperature superconductivity X-ray diffraction; synchrotron radiation; charge density waves; high temperature superconductivity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Campi, G.; Ricci, A.; Poccia, N.; Fratini, M.; Bianconi, A. X-Rays Writing/Reading of Charge Density Waves in the CuO2 Plane of a Simple Cuprate Superconductor. Condens. Matter 2017, 2, 26.

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