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- W1971073300 abstract "We report measurements of the in-plane thermal conductivity ($kappa$) of YBa_2Cu_4O_8 (Y-124) single crystals in the temperature range $4Kleq Tleq 300K$ and compare them with previous results on YBa_2Cu_3O_{6+x} (Y-123). For transport perpendicular to the CuO chains, $kappa_a(300K)simeq 10$W/mK, and along the chains, $kappa_b(300K)simeq 40$W/mK. The temperature dependence of $kappa$ for both transport directions is much stronger than in YBa_2Cu_3O_{6+x} (Y-123), indicative of substantially superior lattice heat conduction in Y-124, and resulting in maximum values for $kappa$ at $Tsim 20$K exceeding 200W/mK. The data imply a surprisingly large anisotropy in the lattice conduction. $kappa_a$ and $kappa_b$ are enhanced in the superconducting state as in other cuprates. The magnitude and anisotropy of the enhancement are discussed and compared to those of Y-123." @default.
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- W1971073300 date "1998-12-01" @default.
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- W1971073300 title "Anisotropic in-plane thermal conductivity of single-crystal<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>O</mml:mi></mml:mrow><…" @default.
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- W1971073300 doi "https://doi.org/10.1103/physrevb.58.14617" @default.
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