Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
Artikel i vetenskaplig tidskrift, 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.
Författare
Riccardo Arpaia
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Politecnico di Milano
S. Caprara
Sapienza, Università di Roma
Istituto Dei Sistemi Complessi, Rome
Roberto Fumagalli
Politecnico di Milano
G. De Vecchi
Politecnico di Milano
Y. Y. Peng
Beijing University of Technology
Politecnico di Milano
Eric Andersson
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
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, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Marco Salluzzo
CNR - SuPerconducting and other INnovative materials and devices institute, Napoli
Lucio Braicovich
European Synchrotron Radiation Facility (ESRF)
Politecnico di Milano
C. Di Castro
Istituto Dei Sistemi Complessi, Rome
Sapienza, Università di Roma
M. Grilli
Istituto Dei Sistemi Complessi, Rome
Sapienza, Università di Roma
Giacomo Ghiringhelli
Politecnico di Milano
Science
0036-8075 (ISSN) 1095-9203 (eISSN)
Vol. 365 6456 906-910Ämneskategorier
Fysikalisk kemi
Annan fysik
Den kondenserade materiens fysik
DOI
10.1126/science.aav1315
PubMed
31467219