Low-temperature transport properties in a bilayered manganite La1.3Sr1.7Mn2O7

被引：69

作者：

Okuda, T ^{[1
]}

Kimura, T

Tokura, Y

机构：

[1] Joint Res Ctr Atom Technol, JRCAT, Tsukuba, Ibaraki 3050046, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.60.3370

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-temperature magnetotransport properties have been investigated for a single crystal of La1.3Sr1.7Mn2O7 with a bilayered structure to reveal the ground-state nature of the quasi-two-dimensional ferromagnetic state. The specific heat measured in a magnetic field indicates a finite density of state of electrons at the Fermi level with seemingly least mass renormalization, which are subject to the weak-localization effect as evidenced by the T-1/2 dependence of the conductivity. The highly anisotropic magnetoresistance at low temperatures with respect to the field direction arises from the spin-valve effect due to the ferromagnetic-domain rotation as well as from the field destruction of the localization effect, proving a quasi-two-dimensional diffusive metal as the ground state. [S0163-1829(99)08729-9].

引用

页码：3370 / 3374

页数：5

共 31 条

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