Superconductivity, magnetic fluctuations, and magnetic order in TbSr2Cu2.69Mo0.31O7
W.-H. Li, W. Y. Chuang, S. Y. Wu, K. C. Lee, J. W. Lynn, H. L. Tsay, H. D. Yang
DOI 10.1103/PhysRevB.56.5631 · Physical Review B
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Abstract
Neutron-diffraction and ac-susceptibility measurements have been performed to study the superconductivity and magnetic order of the Tb spins in polycrystalline TbSr2Cu2.69Mo0.31O7. Superconductivity with an onset temperature at 37 K was observed in the dc electrical resistivity and ac-magnetic-susceptibility measurements. A two-step transition to the superconducting state was seen, as both intragranular and Josephson-like intergranular losses were evident in the out-of-phase component of the ac susceptibility. Magnetic correlations between the Tb spins start developing around 40 K, and the correlation length diverges at TN=5.4K with the nearest-neighbor Tb spins aligned antiparallel along all three crystallographic directions. Below 5.4 K, superconductivity and Tb magnetic order coexist.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| TbSr2Cu2.69Mo0.31O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
| TbSr2Cu2.69Mo0.31O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
| TbSr2Cu2.69Mo0.31O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 32 | Pressure not reported | zero_resistance |
| Pb2Sr2TbCu3O8 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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