Low-temperature normal-state resistivity of high-Tc cuprates

被引：0

作者：

Ando, Yoichi ^{[1
]}

Boebinger, G.S. ^{[1
]}

Passner, A. ^{[1
]}

Wang, N.L. ^{[1
]}

Geibel, C. ^{[1
]}

Steglich, F. ^{[1
]}

Kimura, T. ^{[1
]}

Okuya, M. ^{[1
]}

Shimoyama, J. ^{[1
]}

Kishio, K. ^{[1
]}

Tamasaku, K. ^{[1
]}

Ichikawa, N. ^{[1
]}

Uchida, S. ^{[1
]}

机构：

[1] Lucent Technologies, Murray Hill, United States

来源：

Physica C: Superconductivity and its Applications | 1997年 / 282-287卷 / pt 1期

关键词：

Bismuth compounds - Doping (additives) - Electric conductivity measurement - High temperature superconductors - Lanthanum compounds - Low temperature properties - Magnetic fields - Strontium;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The results of low-temperature normal-state resistivity measurements of La2-xSrxCuO4 (LSCO) and Bi2Sr2-xLaxCuOy (Bi-2201) using 61-T pulsed magnetic fields are summarized. Measurements of LSCO with various Sr doping reveal (1) an insulator-to-metal crossover in the normal state that takes place near optimum doping and (2) unusual log(1/T) divergence of both ρab and ρc of insulating underdoped samples. In particularly clean Bi-2201 crystals, metallic in-plane resistivity and insulating c-axis resistivity are found to coexist down to the lowest experimental temperature. Recent measurements of the low-temperature normal-state Hall effect on Bi-2201 find an essentially temperature-independent Hall coefficient below 20 K, which suggests that the unusual insulating behavior does not come from conventional disorder-enhanced electron interactions.

引用

页码：240 / 243

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