Kortyka, A., Puzniak, R., Wisniewski, A., Zehetmayer, M., Weber, H. W., Tang, C. Y., Yao, X., & Conder, K. (2010). Evidence for a temperature dependent anisotropy of the superconducting state parameters in underdoped SmBa₂Cu₃Oₓ. Physical Review B, 82(054510). https://doi.org/10.1103/physrevb.82.054510
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
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Journal:
Physical Review B
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ISSN:
2469-9950
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Date (published):
9-Aug-2010
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Number of Pages:
9
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Publisher:
AMER PHYSICAL SOC
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Peer reviewed:
Yes
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Keywords:
Condensed Matter Physics; Electronic, Optical and Magnetic Materials
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Abstract:
The temperature dependence of the anisotropy of the superconducting state parameters, , 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.
