Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
| Autor: | R. Fumagalli, G. M. De Luca, Riccardo Arpaia, Eric Andersson, Giacomo Claudio Ghiringhelli, Nicholas B. Brookes, Yingying Peng, Sergio Caprara, Davide Betto, Lucio Braicovich, G. De Vecchi, C. Di Castro, Floriana Lombardi, Marco Salluzzo, Marco Grilli |
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| Přispěvatelé: | Arpaia, R, Caprara, S, Fumagalli, R, De Vecchi, G, Peng, Y Y, Andersson, E, Betto, D, De Luca, G M, Brookes, N B, Lombardi, F, Salluzzo, M, Braicovich, L, Di Castro, C, Grilli, M, Ghiringhelli, G |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Superconductivity Multidisciplinary Condensed matter physics Scattering Condensed Matter - Superconductivity Doping cuprate superconductors charge density fluctuations FOS: Physical sciences Charge density Phase diagram Superconductivity (cond-mat.supr-con) Cuprates Condensed Matter::Superconductivity Cuprate Pseudogap High Tc superconductors |
| Zdroj: | Science (N. Y., N.Y.) 365 (2019): 906–910. doi:10.1126/science.aav1315 info:cnr-pdr/source/autori:Arpaia R.; Caprara S.; Fumagalli R.; De Vecchi G.; Peng Y.Y.; Andersson E.; Betto D.; De Luca G.M.; Brookes N.B.; Lombardi F.; Salluzzo M.; Braicovich L.; Di Castro C.; Grilli M.; Ghiringhelli G./titolo:Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor/doi:10.1126%2Fscience.aav1315/rivista:Science (N. Y., N.Y.)/anno:2019/pagina_da:906/pagina_a:910/intervallo_pagine:906–910/volume:365 |
| DOI: | 10.1126/science.aav1315 |
| Popis: | Charge density waves are a common occurrence in all families of high critical temperature superconducting cuprates. Although consistently observed in the underdoped region of the phase diagram and at relatively low temperatures, it is still unclear to what extent they influence the unusual properties of these systems. Using resonant x-ray scattering we carefully determined the temperature dependence of charge density modulations in (Y,Nd)Ba$_2$Cu$_3$O$_{7-{\delta}}$ for three doping levels. We discovered short-range dynamical charge density fluctuations besides the previously known quasi-critical charge density waves. They persist up to well above the pseudogap temperature T*, are characterized by energies of few meV and pervade a large area of the phase diagram, so that they can play a key role in shaping the peculiar normal-state properties of cuprates. Comment: 34 pages, 4 figures, 11 supplementary figures |
| Databáze: | OpenAIRE |
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