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Development of spatial inhomogeneity of internal magnetic field above $T_{\rm c}$ in Bi$_2$Sr$_2$Ca$_{1-x}$Y$_x$Cu$_2$O$_{8+δ}$ observed by longitudinal-field muon-spin-relaxation (1404.2406v1)
Published 9 Apr 2014 in cond-mat.supr-con and cond-mat.str-el
Abstract: Longitudinal-field muon-spin-relaxation measurements have revealed inhomogeneous distribution of the internal magnetic field at temperatures above the bulk superconducting (SC) transition temperature, $T_{\rm c}$, in slightly overdoped Bi$2$Sr$_2$Ca${1-x}$Y$x$Cu$_2$O${8+\delta}$. The distribution width of the internal magnetic field, $\Delta$, evolves continuously with decreasing temperature toward $T_{\rm c}$. The origin of the increase in $\Delta$ is discussed in terms of the creation of SC domains in a sample.
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