Possible Existence of the Stripe Correlations in Electron-Doped Superconducting Cuprates Eu_1.85Ce_0.15Cu_1-yNi_yO_4+α-δ Studied by Muon-Spin-Relaxation

Abstract:

Partially Ni-substituted electron-doped superconducting cuprates of Eu_1.85Ce_0.15Cu_1-yNi_yO_4+α-δ (ECCNO) with y = 0, 0.01, 0.02 and 0.05 have been studied by muon-spin-relaxation (mSR) measurements, in order to elucidate whether or not the dynamical stripe correlations of spins and charges exist in electron-doped cuprates. It has been found that the development of the Cu-spin correlation is induced at low temperatures through the Ni substitution and that, for y = 0.02, a muon-spin precession due to a long-range magnetic order has been observed at 10 K. These results suggest a possibility that the stripe model can globally explain the high-T_c superconductivity in both hole- and electron-doped cuprates.

• Periodical: Advanced Materials Research (Volume 896)
• Pages: 354-357
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.896.354
• Online since: February 2014
• Authors: Risdiana Risdiana*, Lusi Safriani, Wahyu Alamsyah Somantri, Togar Saragi, Tadashi Adachi, Ikuto Kawasaki, Isao Watanabe, Yoji Koike
• Keywords: Electron-Doped Superconducting Cuprates, Muon-Spin-Relaxation, Ni-Substitution Effects, Stripe Model

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