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 · Physical Review B
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Abstract
The temperature dependence of the anisotropy of the superconducting state parameters, γ, 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| SmBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 42.8 | Pressure not reported | onset |
| SmBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 51.5 | Pressure not reported | onset |
| SmBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 56.5 | Pressure not reported | onset |
| SmBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63.6 | Pressure not reported | onset |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| LuNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Y2Ba4Cu8O16 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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