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- W1643082004 abstract "In-plane $({ensuremath{rho}}_{mathrm{ab}})$ and out-of-plane $({ensuremath{rho}}_{c})$ normal state resistivities of insulating ${mathrm{PrBa}}_{2}{mathrm{Cu}}_{3}{mathrm{O}}_{7ensuremath{-}ensuremath{delta}}$ and superconducting ${mathrm{Y}}_{0.47}{mathrm{Pr}}_{0.53}{mathrm{Ba}}_{2}{mathrm{Cu}}_{3}{mathrm{O}}_{7ensuremath{-}ensuremath{delta}}$ $({T}_{c}ensuremath{approx}18mathrm{K})$ crystals have been measured using a ``flux transformer'' method. In the insulating sample we have found that ${ensuremath{rho}}_{c}/{ensuremath{rho}}_{mathrm{ab}}{phantom{rule{0ex}{0ex}}=phantom{rule{0ex}{0ex}}a+bT}^{ensuremath{-}2/3}$ over two decades of temperature, which indicates two-dimensional localization. By suppressing the onset of superconductivity with a magnetic field, we have observed that low ${T}_{c}$ ${mathrm{Y}}_{1ensuremath{-}x}{mathrm{Pr}}_{x}{mathrm{Ba}}_{2}{mathrm{Cu}}_{3}{mathrm{O}}_{7ensuremath{-}ensuremath{delta}}$ is transformed into a 2D insulator with transport properties similar to those of ${mathrm{PrBa}}_{2}{mathrm{Cu}}_{3}{mathrm{O}}_{7ensuremath{-}ensuremath{delta}}$." @default.
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- W1643082004 date "1998-01-26" @default.
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- W1643082004 title "Two-Dimensional Localization and Superconductor-Insulator Transition in Strongly Underdoped Single Crystals of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi>Y</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi mathvariant=italic>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Pr</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant=italic>x</mml:mi></mml:mrow></mml:msub></mml:…" @default.
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- W1643082004 doi "https://doi.org/10.1103/physrevlett.80.841" @default.
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