Electronic Behavior of Superconducting SmFeAsO0.75

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

doi:10.1063/1.3573667

Electronic Behavior of Superconducting SmFeAsO0.75

Superconductivity 2011-05-10 v1

Authors: 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.

Keywords

superconductivity high-temperature superconductivity single crystal superconductivity

Cite

@article{arxiv.1102.5569,
  title  = {Electronic Behavior of Superconducting SmFeAsO0.75},
  author = {Y. Sun and Y. Ding and B. C. Zheng and Z. X. Shi and Z. A. Ren},
  journal= {arXiv preprint arXiv:1102.5569},
  year   = {2011}
}

Comments

10 pages, 6 figures

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