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arXiv · 1102.5569

Electronic Behavior of Superconducting SmFeAsO0.75

Y. Sun·Y. Ding·B. C. Zheng·Z. X. Shi·Z. A. Ren
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Abstract

High-quality polycrystalline SmFeAsO0.75 was synthesized with a superconducting transition width less than 1 K, and the electronic behavior was systematically studied by transport and specific heat measurements. An obvious superconducting jump was witnessed, together with a very small normalized superconducting jump, which is much smaller than expected by the BCS theory. A strong temperature dependent Hall coefficient was found and attributed to the partial gapping of the Fermi surface up to the temperature of 160 K which was predicted and supported by the emergence of the pseudogap. The charge-carrier density as well as the effective mass were also obtained and discussed in detail.

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Y. Sun, Y. Ding, B. C. Zheng, Z. X. Shi, Z. A. Ren. 2011-02-28. Electronic Behavior of Superconducting SmFeAsO0.75. https://doi.org/10.1063/1.3573667

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