Flux line lattice state versus magnetism in electron-doped cuprate superconductor Sr_{1-x}La_{x}CuO_{2}

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dc.creatorSatoh, Kohki H.
dc.creatorTakeshita, Soshi
dc.creatorKoda, Akihiro
dc.creatorKadono, Ryosuke
dc.creatorIshida, Kenji
dc.creatorPyon, Sunsen
dc.creatorSasagawa, Takao
dc.creatorTakagi, Hidenori
dc.date2007-10-03
dc.date2008-05-18
dc.date.accessioned2026-07-07T09:39:16Z
dc.date.available2026-07-07T09:39:16Z
dc.descriptionThe microscopic details of flux line lattice state studied by muon spin rotation is reported in an electron-doped high-$T_{\rm c}$ cuprate superconductor, Sr$_{1-x}$La$_{x}$CuO$_{2}$ (SLCO, $x=0.10$--0.15). A clear sign of phase separation between magnetic and non-magnetic phases is observed, where the effective magnetic penetration depth [$λ\equivλ(T,H)$] is determined selectively for the latter phase. The extremely small value of $λ(0,0)$ %versus $T_{\rm c}$ and corresponding large superfluid density ($n_s \propto λ^{-2}$) is consistent with presence of a large Fermi surface with carrier density of $1+x$, which suggests the breakdown of the "doped Mott insulator" even at the "optimal doping" in SLCO. Moreover, a relatively weak anisotropy in the superconducting order parameter is suggested by the field dependence of $λ(0,H)$. These observations strongly suggest that the superconductivity in SLCO is of a different class from hole-doped cuprates.
dc.description7 pages,6 figures. Added figure and changed content. This manuscript will be published by Physical Review B
dc.identifierhttps://arxiv.org/abs/0710.0773
dc.identifierhttp://arxiv.org/abs/0710.0773
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161107
dc.subjectSuperconductivity
dc.titleFlux line lattice state versus magnetism in electron-doped cuprate superconductor Sr_{1-x}La_{x}CuO_{2}
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