Superconductivity and field-induced magnetism in Pr2-xCexCuO4 single crystals

We report muon-spin rotation and relaxation (muSR) measurements on single crystals of the electron-doped high-T(c) superconductor Pr2-xCexCuO4. In a zero external magnetic field, superconductivity is found to coexist with dilute Cu spins that are static on the muSR time scale. In an applied field, w...

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Published in:Physical review letters 2003-10, Vol.91 (14), p.147002-147002
Main Authors: Sonier, J E, Poon, K F, Luke, G M, Kyriakou, P, Miller, R I, Liang, R, Wiebe, C R, Fournier, P, Greene, R L
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container_issue 14
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container_title Physical review letters
container_volume 91
creator Sonier, J E
Poon, K F
Luke, G M
Kyriakou, P
Miller, R I
Liang, R
Wiebe, C R
Fournier, P
Greene, R L
description We report muon-spin rotation and relaxation (muSR) measurements on single crystals of the electron-doped high-T(c) superconductor Pr2-xCexCuO4. In a zero external magnetic field, superconductivity is found to coexist with dilute Cu spins that are static on the muSR time scale. In an applied field, we observe a mu(+)-Knight shift that is primarily due to the magnetic moment induced on the Pr ions. Below the superconducting transition temperature T(c), an additional source of local magnetic field appears throughout the volume of the sample. This finding is shown to be consistent with field-induced antiferromagnetic ordering of the Cu spins. Measurements of the temperature dependence of the in-plane magnetic penetration depth lambda(ab) in the vortex state are also presented.
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title Superconductivity and field-induced magnetism in Pr2-xCexCuO4 single crystals
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