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The Transport Properties of Bi-Riched Bi2Sr2CuO6+δ Single Crystal

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Abstract

As-grown superconducting Bi-riched Bi2Sr2CuO6+δ single crystals have been grown by the traveling solvent floating zone technique. The superconducting transition temperature T c was about 6 K and the room temperature resistivity was about 2×10−3 Ohm-cm. Transport properties, such as resistivity, magnetoresistance and Hall effect were measured from overdoped to underdoped samples annealed in inert atmosphere at 650°C. The transition temperature can be raised to 12 K after post annealing. The Hall measurement shows that the hole carrier density decrease after annealing. The temperature dependence of Hall angle is T 1.5, not quadratic as observed for most high-T c superconducting oxides such as YBa2Cu3O7. The variation of onset T c with different external magnetic field is very different from high-T c superconductors. The in-plane conductivity shows the dependence of ln T and can be explained by weak localization theory.

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Authors and Affiliations

  1. Department of Physics and Materials Science Center, National Tsing Hua University, Hsinchu, Taiwan, ROC

    C. M. Cheng & C. C. Chi

  2. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, ROC

    K. W. Yeh & Y. Huang

Authors
  1. C. M. Cheng
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  2. K. W. Yeh
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  3. Y. Huang
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  4. C. C. Chi
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Cheng, C.M., Yeh, K.W., Huang, Y. et al. The Transport Properties of Bi-Riched Bi2Sr2CuO6+δ Single Crystal. Journal of Low Temperature Physics 131, 865–869 (2003). https://doi.org/10.1023/A:1023439329326

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  • DOI: https://doi.org/10.1023/A:1023439329326

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