Low-energy spin fluctuations in the ground states of electron-doped Pr1-xLaCexCuO4+δ cuprate superconductors

Masaki Fujita, M. Matsuda, S. H. Lee, M. Nakagawa, K. Yamada

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31 Citations (Scopus)

Abstract

Low-energy spin fluctuations have been investigated in the electron-doped Pr1-xLaCexCuO4+δ over a wide concentration range of 0.07≤x≤0.18, spanning from the antiferromagnetic phase to the heavily overdoped superconducting (SC) phase. The low-energy excitations exhibit commensurate peaks centered at the (π, π) position for all x. Our data show that the characteristics of the excitations, such as the relaxation rate and the spin stiffness, decrease with increasing x in the SC phase and disappear with the disappearance of superconductivity.

Original languageEnglish
Article number107003
JournalPhysical Review Letters
Volume101
Issue number10
DOIs
Publication statusPublished - 2008 Sep 5

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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