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 (MC2), 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 (MC2), 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 (MC2), 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)

Vol. 365 6456 906-910

Ämneskategorier

Fysikalisk kemi

Annan fysik

Den kondenserade materiens fysik

DOI

10.1126/science.aav1315

PubMed

31467219

Mer information

Senast uppdaterat

2019-11-08