Low-temperature resistance minimum and its origin in La2/3Ca1/3Mn1-xCuxO3 (x=0.15) system

被引：11

作者：

Li, G ^{[1
]}

Tang, P ^{[1
]}

Sun, X ^{[1
]}

Jiang, Y ^{[1
]}

Chen, Y ^{[1
]}

Wang, S ^{[1
]}

Huang, Z ^{[1
]}

Yuan, SL ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

ACTA PHYSICA SINICA | 1999年 / 48卷 / 03期

关键词：

D O I：

10.7498/aps.48.505

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature dependence of resistance in the La2/3Ca1/3Mn1-xCuxO3 (x = 0 and 0.15) system at temperatures much lower than Curie temperature has been experimentally studied. It is found that a resistance maximum obviously appears in the zero-field R-T curve of the Cu-doped sample. Such a resistance minimum disappears when a magnetic field is applied to the sample. Based on Kondo theory, a quantitative comparison between the theory and the experimental data has been presented. It is shown that the experimental observation can be well understood within the framework of Kondo theory.

引用

页码：505 / 510

页数：6

共 10 条

[1] A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].

ASAMITSU, A ;

MORITOMO, Y ;

TOMIOKA, Y ;

ARIMA, T ;

TOKURA, Y .

NATURE, 1995, 373 (6513) :407-409

[2] ELECTRON LOCALIZATION IN MIXED-VALENCE MANGANITES [J].

COEY, JMD ;

VIRET, M ;

RANNO, L ;

OUNADJELA, K .

PHYSICAL REVIEW LETTERS, 1995, 75 (21) :3910-3913

[3] THEORY OF THE ROLE OF COVALENCE IN THE PEROVSKITE-TYPE MANGANITES [LA,M(II)]MNO3 [J].

GOODENOUGH, JB .

PHYSICAL REVIEW, 1955, 100 (02) :564-573

[4] COLOSSAL MAGNETORESISTANCE IN LA-CA-MN-O FERROMAGNETIC THIN-FILMS (INVITED) [J].

JIN, S ;

MCCORMACK, M ;

TIEFEL, TH ;

RAMESH, R .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :6929-6933

[5] FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE [J].

JONKER, GH ;

VANSANTEN, JH .

PHYSICA, 1950, 16 (03) :337-349

[6]

KITTEL C, 1979, INTRO SOLID STATE PH, P608

[7] Relationship between spin order and transport and magnetotransport properties in La0.67Ca0.33Mn1-xAlxOy compounds [J].

Turilli, G ;

Licci, F .

PHYSICAL REVIEW B, 1996, 54 (18) :13052-13057

[8] INFLUENCE OF PREPARATION ON RESISTIVITY BEHAVIOR OF EPITAXIAL ND0.7SR0.3MNO3-DELTA AND LA0.67BA0.33MNO3-DELTA THIN-FILMS [J].

XIONG, GC ;

LI, Q ;

JU, HL ;

GREENE, RL ;

VENKATESAN, T .

APPLIED PHYSICS LETTERS, 1995, 66 (13) :1689-1691

[9] INTERACTION BETWEEN THE D-SHELLS IN THE TRANSITION METALS .2. FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE [J].

ZENER, C .

PHYSICAL REVIEW, 1951, 82 (03) :403-405

[10]

孙霞, 1998, 物理学报, V47, P965

← 1 →