Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
Journal article, 2019
Charge density modulations have been observed in all families of high–critical temperature (Tc) superconducting cuprates. Although they are consistently found 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 YBa2Cu3O7–d and Nd1+xBa2–xCu3O7–d for several doping levels. We isolated short-range dynamical charge density fluctuations in addition to the previously known quasi-critical charge density waves. They persist up to well above the pseudogap temperature T*, are characterized by energies of a few milli–electron volts, and pervade a large area of the phase diagram.
Author
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Polytechnic University of Milan
S. Caprara
Sapienza University of Rome
Istituto Dei Sistemi Complessi, Rome
Roberto Fumagalli
Polytechnic University of Milan
G. De Vecchi
Polytechnic University of Milan
Y. Y. Peng
Beijing University of Technology
Polytechnic University of Milan
Eric Andersson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Davide Betto
European Synchrotron Radiation Facility (ESRF)
G. M. De Luca
CNR - SuPerconducting and other INnovative materials and devices institute, Napoli
University of Naples Federico II
Nicholas B. Brookes
European Synchrotron Radiation Facility (ESRF)
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Marco Salluzzo
CNR - SuPerconducting and other INnovative materials and devices institute, Napoli
Lucio Braicovich
European Synchrotron Radiation Facility (ESRF)
Polytechnic University of Milan
C. Di Castro
Istituto Dei Sistemi Complessi, Rome
Sapienza University of Rome
M. Grilli
Istituto Dei Sistemi Complessi, Rome
Sapienza University of Rome
Giacomo Ghiringhelli
Polytechnic University of Milan
Science
0036-8075 (ISSN) 1095-9203 (eISSN)
Vol. 365 6456 906-910Subject Categories
Physical Chemistry
Other Physics Topics
Condensed Matter Physics
DOI
10.1126/science.aav1315
PubMed
31467219