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
Politecnico di Milano
Beijing University of Technology
Eric Andersson
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Davide Betto
European Synchrotron Radiation Facility (ESRF)
G. M. De Luca
Universita degli Studi di Napoli Federico II
Consiglio Nazionale delle Ricerche (CNR)
Nicholas B. Brookes
European Synchrotron Radiation Facility (ESRF)
Floriana Lombardi
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Marco Salluzzo
Consiglio Nazionale delle Ricerche (CNR)
Lucio Braicovich
European Synchrotron Radiation Facility (ESRF)
Politecnico di Milano
C. Di Castro
Sapienza Università di Roma
Istituto Dei Sistemi Complessi, Rome
M. Grilli
Istituto Dei Sistemi Complessi, Rome
Sapienza Università di Roma
Giacomo Ghiringhelli
Politecnico di Milano
Science
00368075 (ISSN) 10959203 (eISSN)
Vol. 365 6456 906-910Ämneskategorier (SSIF 2011)
Fysikalisk kemi
Annan fysik
Den kondenserade materiens fysik
DOI
10.1126/science.aav1315
PubMed
31467219