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

Universita degli Studi di Napoli 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)

Vol. 365 6456 906-910

Subject Categories

Physical Chemistry

Other Physics Topics

Condensed Matter Physics

DOI

10.1126/science.aav1315

PubMed

31467219

More information

Latest update

11/8/2019