Abstract
The low-temperature normal-state resistivities of underdoped ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}\mathrm{Cu}{\mathrm{O}}_{4}$ crystals with ${T}_{c}$ of 20 and 35 K were studied by suppressing the superconductivity with pulsed magnetic fields of 61 T. Both in-plane resistivity ${\ensuremath{\rho}}_{\mathrm{ab}}$ and out-of-plane resistivity ${\ensuremath{\rho}}_{c}$ are found to diverge logarithmically as $\frac{T}{{T}_{c}}\ensuremath{\rightarrow}0$. Logarithmic divergence is accompanied by a nearly constant anisotropy ratio, $\frac{{\ensuremath{\rho}}_{c}}{{\ensuremath{\rho}}_{\mathrm{ab}}}$, suggesting an unusual three-dimensional insulator.
Keywords
PhysicsElectrical resistivity and conductivitySuperconductivityCondensed matter physicsAnisotropyPlane (geometry)Divergence (linguistics)LogarithmExponentQuantum mechanicsGeometryMathematical analysisMathematics
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Publication Info
- Year
- 1995
- Type
- article
- Volume
- 75
- Issue
- 25
- Pages
- 4662-4665
- Citations
- 412
- Access
- Closed
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Cite This
Yoichi Ando,
G. S. Boebinger,
A. Passner
et al.
(1995).
Logarithmic Divergence of both In-Plane and Out-of-Plane Normal-State Resistivities of Superconducting<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>in the Zero-Temperature Limit.
Physical Review Letters
, 75
(25)
, 4662-4665.
https://doi.org/10.1103/physrevlett.75.4662
Identifiers
- DOI
- 10.1103/physrevlett.75.4662