Evidence for a temperature dependent anisotropy of the superconducting state parameters in underdoped SmBa2Cu3Ox

A. Kortyka; R. Puzniak; A. Wisniewski; M. Zehetmayer; H. W. Weber; C. Y. Tang; X. Yao; K. Conder

doi:10.1103/PhysRevB.82.054510

Evidence for a temperature dependent anisotropy of the superconducting state parameters in underdoped SmBa2Cu3Ox

Superconductivity 2010-08-17 v1

Authors: A. Kortyka , R. Puzniak , A. Wisniewski , M. Zehetmayer , H. W. Weber , C. Y. Tang , X. Yao , K. Conder

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Abstract

The temperature dependence of the anisotropy of the superconducting state parameters, {\gamma}, was studied by torque magnetometry for the high temperature superconductor SmBa2Cu3Ox in magnetic fields of up to 9 T. The measurements were performed on four underdoped single crystals with oxygen contents corresponding to Tc's varying from 42.8 to 63.6 K. The anisotropy was found to be strongly temperature dependent, while only a weak dependence on the magnetic field was observed. No evidence for a field dependent superfluid density was found. Possible origins of the temperature dependence of the anisotropy are discussed.

Keywords

high-temperature superconductor SmBa2Cu3Ox underdoped anisotropy torque magnetometry superconducting state parameters temperature dependence

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@article{arxiv.1007.3152,
  title  = {Evidence for a temperature dependent anisotropy of the superconducting state parameters in underdoped SmBa2Cu3Ox},
  author = {A. Kortyka and R. Puzniak and A. Wisniewski and M. Zehetmayer and H. W. Weber and C. Y. Tang and X. Yao and K. Conder},
  journal= {arXiv preprint arXiv:1007.3152},
  year   = {2010}
}

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21 pages, 4 figures, accepted for publication in Phys. Rev. B

Evidence for a temperature dependent anisotropy of the superconducting state parameters in underdoped SmBa2Cu3Ox

Abstract

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