Logarithmic Divergence of both In-Plane and Out-of-Plane Normal-State Resistivities of Superconducting La2−xSrxCuO4 in the Zero-Temperature Limit
Yoichi Ando, G. S. Boebinger, A. Passner, Tsuyoshi Kimura, Kohji Kishio
DOI 10.1103/PhysRevLett.75.4662 · Physical Review Letters
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Abstract
The low-temperature normal-state resistivities of underdoped La2−xSrxCuO4 crystals with Tc of 20 and 35 K were studied by suppressing the superconductivity with pulsed magnetic fields of 61 T. Both in-plane resistivity ρab and out-of-plane resistivity ρc are found to diverge logarithmically as TTc→0. Logarithmic divergence is accompanied by a nearly constant anisotropy ratio, ρcρab, suggesting an unusual three-dimensional insulator.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20 | Pressure not reported | midpoint |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | midpoint |
| Tl2Ba2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | unknown |
| Bi2Sr2CuOy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | unknown |
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