Muon spin relaxation study of the spin correlation in the overdoped regime of electron-doped high-Tc cuprate superconductors

Abstract

In order to investigate the low-energy antiferromagnetic Cu-spin correlation and its relation to the superconductivity, we have performed muon spin relaxation (muSR) measurements using single crystals of the electron-doped high-Tc cuprate Pr_1-x_LaCe_x_CuO_4_ in the overdoped regime. The muSR spectra have revealed that the Cu-spin correlation is developed in the overdoped samples where the superconductivity appears. The development of the Cu-spin correlation weakens with increasing x and is negligibly small in the heavily overdoped sample where the superconductivity almost disappears. Considering that the Cu-spin correlation also exist in the superconducting electron-doped cuprates in the undoped and underdoped regimes [T. Adachi et al., J. Phys. Soc. Jpn. 85, 114716 (2016)], our findings suggest that the mechanism of the superconductivity is related to the low-energy Cu-spin correlation in the entire doping regime of the electron-doped cuprates.

arXiv comment5 pages, 4 figures, Phys. Rev. B, in press

References in corpus (17)

• Direct relation between the low-energy spin excitations and superconductivity of overdoped high-$T_c$ superconductors
• Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor
• New class of T-prime-structure cuprate superconductors
• Suppression of the antiferromagnetic pseudogap in the electron-doped high-temperature superconductor by "protect annealing"
• Evolution of the electronic state through the reduction annealing in electron-doped Pr_1.3-x_La_0.7_Ce_x_CuO_4+delta_ (x=0.10) single crystals: Antiferromagnetism, Kondo effect and superconductivity
• Generic phase diagram of "electron-doped" T' cuprates
• Superconducting Volume Fraction in Overdoped Regime of La_2-x_Sr_x_CuO_4_: Implication for Phase Separation from Magnetic-Susceptibility Measurement
• Cu-spin dynamics in the overdoped regime of La_2-x_Sr_x_Cu_1-y_Zn_y_O_4_ probed by muon spin relaxation
• Electronically competing phases and their magnetic field dependence in electron-doped nonsuperconducting and superconducting Pr0.88LaCe0.12CuO4
• Evolution of the low energy spin dynamics in electron-doped high-transition temperature superconductor Pr0.88LaCe0.12CuO4-d
• Strong electron correlation behind the superconductivity in Ce-free and Ce-underdoped high-Tc T'-cuprates
• New superconduting cuprates with no effective doping: T'-(La3+)2-x(RE3+)xCuO4
• Novel Electronic State and Superconductivity in the Electron-Doped High-Tc T'-Superconductors
• Electronic Structure of Ce-Doped and -Undoped Nd${}_2$CuO${}_4$ Superconducting Thin Films Studied by Hard X-ray Photoemission and Soft X-ray Absorption Spectroscopy
• Advances in single crystal growth and annealing treatment of electron-doped HTSC
• Bulk superconductivity in undoped T'-La${}_{1.9}$Y${}_{0.1}$CuO${}_4$ probed by muon spin rotation
• Magnetic Ground State of Pr${}_{0.89}$LaCe${}_{0.11}$CuO${}_{4+\alpha -\delta }$ with Varied Oxygen Depletion Probed by Muon Spin Relaxation

Cited by in corpus (4)

• The overdoped end of the cuprate phase diagram
• Extended superconducting dome of electron-doped cuprates after protect annealing revealed by ARPES
• Vortex Dynamics and Phase Diagram in the Electron Doped Cuprate Superconductor Pr${}_{0.87}$LaCe${}_{0.13}$CuO${}_4$
• Cu-spin Correlation in the Electron-overdoped High-Tc Cuprate Thin Films of La_2-x_Ce_x_CuO_4_ Probed by Low-energy Muons