MAGNETOTRANSPORT PROPERTIES OF LA0.6PB0.4MNO3-DELTA AND ND-0.6(SR0.7PB0.3)(0.4)MNO3-DELTA SINGLE-CRYSTALS

被引：84

作者：

JIA, YX ^{[1
]}

LU, L ^{[1
]}

KHAZENI, K ^{[1
]}

CRESPI, VH ^{[1
]}

ZETTL, A ^{[1
]}

COHEN, ML ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.52.9147

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetotransport measurements of high-quality single crystals of La0.6Pb0.4MnO3-delta and Nd-0.6(Sr0.7Pb0.3)(0.4)MnO3-delta show a close relationship between giant magnetoresistance and the ferromagnetic ordering transition in these materials. In contrast to results for thin film and polycrystalline materials, magnetoresistance of these single crystals vanishes as T-->0. A two-component polaron model provides a possible framework for the interpretation of the previously unexplained variation in the functional form of rho(H) above and below the Curie temperature.

引用

页码：9147 / 9150

页数：4

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