Insulator-to-metal crossover in the normal state of La2-xSrxCuO4 near optimum doping

被引：459
作者：
Boebinger, GS
Ando, Y
Passner, A
Kimura, T
Okuya, M
Shimoyama, J
Kishio, K
Tamasaku, K
Ichikawa, N
Uchida, S
机构：
[1] UNIV TOKYO,DEPT APPL CHEM,BUNKYO KU,TOKYO 113,JAPAN
[2] UNIV TOKYO,SUPERCONDUCT RES COURSE,BUNKYO KU,TOKYO 113,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 27期
关键词：
D O I：
10.1103/PhysRevLett.77.5417
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A 61-T pulsed magnetic field suppresses superconductivity in La2-xSrxCuO4 single crystals and reveals an insulator-to-metal (IM) crossover for both in-plane resistivity rho(ab) and c-axis resistivity rho(c) at a Sr concentration near optimum doping (x similar or equal to 0.16). The IM transition is unusual in that all underdoped samples (x < 0.16) show low-temperature insulating behavior, even in samples with linear-T rho(ab) above T-c and apparently large k(F)l.
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页码：5417 / 5420
页数：4
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