Metal-to-insulator crossover in the low-temperature normal state of Bi2Sr2-xLaxCuO6+δ

被引：206

作者：

Ono, S

Ando, Y ^{[1
]}

Murayama, T

Balakirev, FF

Betts, JB

Boebinger, GS

机构：

[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan

[2] Sci Univ Tokyo, Dept Phys, Tokyo 1628601, Japan

[3] Univ Calif Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.85.638

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure the normal-state in-plane resistivity of Bi2Sr2-xLaxCuO6+delta single crystals at low temperatures by suppressing superconductivity with 60 T pulsed magnetic fields. With decreasing hole doping, we observe a crossover from a metallic to an insulating behavior in the low-temperature normal state. This crossover is estimated to occur near 1/8 doping, well inside the underdoped regime, and not at optimum doping as reported for other cuprates. The insulating regime is marked by a logarithmic temperature dependence of the resistivity over two decades of temperature, suggesting that a peculiar charge localization is common to the cuprates.

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页码：638 / 641

页数：4

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