Coupling between dynamic magnetic and charge-order correlations in the cuprate superconductor Nd2−xCexCuO4

作     者：E. H. da Silva Neto M. Minola B. Yu W. Tabis M. Bluschke D. Unruh H. Suzuki Y. Li G. Yu D. Betto K. Kummer F. Yakhou N. B. Brookes M. Le Tacon M. Greven B. Keimer A. Damascelli 

作者机构：Department of Physics University of California Davis California 95616 USA Quantum Matter Institute University of British Columbia Vancouver British Columbia V6T 1Z4 Canada Max Planck Institute for Solid State Research Heisenbergstrasse 1 D-70569 Stuttgart Germany School of Physics and Astronomy University of Minnesota Minneapolis Minnesota 55455 USA Laboratoire National des Champs Magnétiques Intenses CNRS UPR-3228 F-31400 Toulouse France AGH University of Science and Technology Faculty of Physics and Applied Computer Science PL-30-059 Krakow Poland Institute of Solid State Physics TU Wien A-1040 Vienna Austria Helmholtz-Zentrum Berlin für Materialien und Energie BESSY II Albert-Einstein-Strasse 15 D-12489 Berlin Germany European Synchrotron Radiation Facility 71 Avenue de Martyrs CS40220 F-38043 Grenoble Cedex 9 France Institut für Festkörperphysik Karlsruher Institut für Technologie D-76201 Karlsruhe Germany Department of Physics & Astronomy University of British Columbia Vancouver British Columbia V6T 1Z1 Canada 

出 版 物：《Physical Review B》 (Phys. Rev. B)

年 卷 期：2018年第98卷第16期

页      面：161114(R)-161114(R)页

核心收录：

基　　金：Canada Research Chairs Program University of Minnesota, UM Quantum Materials and Future Technologies Program National Science Foundation, NSF Engineering Research Centers, ERC Norsk Sykepleierforbund, NSF CIFAR Quantum Materials Canada Foundation for Innovation, CFI Max Planck-UBC-UTokyo Centre for Quantum Materials and the Canada First Research Excellence Fund Natural Sciences and Engineering Research Council of Canada, NSERC Alfred P. Sloan Foundation Canadian Institute for Advanced Research, CIFAR European Research Council, ERC Alexander von Humboldt-Stiftung Austrian Science Fund, FWF, (P27980-N36) Austrian Science Fund, FWF Materials Research Science and Engineering Center, University of Nebraska, MRSEC, (DMR-1420013) Materials Research Science and Engineering Center, University of Nebraska, MRSEC Horizon 2020 Framework Programme, H2020, (725521) Horizon 2020 Framework Programme, H2020 

主　　题：Charge order Impurities in superconductors Stripes Cuprates High-temperature superconductors Strongly correlated systems Resonant inelastic x-ray scattering 

摘      要：Charge order has now been observed in several cuprate high-temperature superconductors. We report a resonant inelastic x-ray scattering experiment on the electron-doped cuprate Nd2−xCexCuO4 that demonstrates the existence of dynamic correlations at the charge-order wave vector. Upon cooling we observe a softening in the electronic response, which has been predicted to occur for a d-wave charge order in electron-doped cuprates. At low temperatures, the energy range of these excitations coincides with that of the dispersive magnetic modes known as paramagnons. Furthermore, measurements where the polarization of the scattered photon is resolved indicate that the dynamic response at the charge-order wave vector primarily involves spin-flip excitations. Overall, our findings indicate a coupling between dynamic magnetic and charge-order correlations in the cuprates.