Metal-to-Insulator Crossover in the Low-Temperature Normal State of Bi{sub 2}Sr{sub 2-x}La{sub x}CuO{sub 6+{delta}}

Journal Article · Mon Jul 17 04:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.85.638· OSTI ID:20217147

Ono, S ^[1]; Ando, Yoichi ^[1]; Murayama, T ^[1]; Balakirev, F F ^[2]; Betts, J B ^[2]; Boebinger, G S ^[2]

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1. Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, (Japan)
2. NHMFL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We measure the normal-state in-plane resistivity of Bi{sub 2}Sr {sub 2-x}La{sub x}CuO{sub 6+{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. (c) 2000 The American Physical Society.

• OSTI ID: 20217147
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 85; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
COPPER OXIDES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
MAGNETIC FIELDS
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE