Saturation of resistivity and Kohler's rule in Ni-doped La1.85Sr0.15CuO4 cuprate

被引：7

作者：

Malinowski, A. ^{[1
]}

Bezusyy, V. L. ^{[1
,2
]}

Nowicki, P. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, Al Lotnikow 32-46, PL-02668 Warsaw, Poland

[2] Int Lab High Magnet Fields & Low Temp, Ul Gajowicka 95, PL-53421 Wroclaw, Poland

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 01期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; IOFFE-REGEL CRITERION; T-C SUPERCONDUCTOR; QUANTUM OSCILLATIONS; THERMOELECTRIC-POWER; SINGLE-CRYSTALS; FERMI-SURFACE; ELECTRICAL-RESISTIVITY; PSEUDOGAP; MAGNETORESISTANCE;

D O I：

10.1103/PhysRevB.95.014521

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the results of electrical transport measurements of La(1.8)5Sr(0.15)Cu(1-y)Ni(y)O(4) thin single-crystal films at magnetic fields up to 9 T. Adding Ni impurity with strong Coulomb scattering potential to a slightly underdoped cuprate makes the signs of resistivity saturation rho(sat) visible in the measurement temperature window up to 350 K. Employing the parallel-resistor formalism reveals that rho(sat) is consistent with the classical Ioffe-Regel-Mott limit and changes with carrier concentration n as rho(sat) proportional to 1/root n. Thermopower measurements show that Ni tends to localize mobile carriers, decreasing their effective concentration as n congruent to 0.15 - y. The classical unmodified Kohler's rule is fulfilled for magnetoresistance in the nonsuperconducting part of the phase diagram when applied to the ideal branch in the parallel-resistor model.

引用

页数：6

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