Polaron transport in the paramagnetic phase of electron-doped manganites

被引：30

作者：

Cohn, JL ^{[1
]}

Chiorescu, C

Neumeier, JJ

机构：

[1] Univ Miami, Dept Phys, Coral Gables, FL 33124 USA

[2] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.72.024422

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical resistivity, Hall coefficient, and thermopower as functions of temperature are reported for lightly electron-doped Ca1-xLaxMnO3 (0 <= x <= 0.10). Unlike the case of hole-doped ferromagnetic manganites, the magnitude and temperature dependence of the Hall mobility (mu(H)) for these compounds is found to be inconsistent with small-polaron theory. The transport data are better described by the Feynman polaron theory and imply intermediate coupling (alpha similar or equal to 5.4) with a band effective mass m(*)similar to 4.3m(0) and a polaron mass m(p)similar to 10m(0).

引用

收藏

页数：6

相关论文

共 47 条

[11] ELECTRON-SCATTERING BY IONIZED IMPURITIES IN SEMICONDUCTORS [J].

CHATTOPADHYAY, D ;

QUEISSER, HJ .

REVIEWS OF MODERN PHYSICS, 1981, 53 (04) :745-768

[12] COMPARISON OF STRONTIUM-INDUCED AND OXYGEN-INDUCED HOLES IN LA2CUO4 [J].

CHEN, CY ;

BRANLUND, EC ;

BAE, CS ;

YANG, K ;

KASTNER, MA ;

CASSANHO, A ;

BIRGENEAU, RJ .

PHYSICAL REVIEW B, 1995, 51 (06) :3671-3677

[13] Spin versus lattice polaron:: Prediction for electron-doped CaMnO3 -: art. no. 064401 [J].

Chen, YR ;

Allen, PB .

PHYSICAL REVIEW B, 2001, 64 (06)

[14] Low-temperature permittivity of insulating perovskite manganites [J].

Cohn, JL ;

Peterca, M ;

Neumeier, JJ .

PHYSICAL REVIEW B, 2004, 70 (21) :1-6

[15] Heat conduction and magnetic phase behavior in electron-doped Ca1-xLaxMnO3 (0≤x≤0.2) -: art. no. 100404 [J].

Cohn, JL ;

Neumeier, JJ .

PHYSICAL REVIEW B, 2002, 66 (10) :1004041-1004044

[16] Electrical and thermal transport in perovskite manganites [J].

Cohn, JL .

JOURNAL OF SUPERCONDUCTIVITY, 2000, 13 (02) :291-304

[17] Colossal magnetoresistant materials: The key role of phase separation [J].

Dagotto, E ;

Hotta, T ;

Moreo, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 344 (1-3) :1-153

[18] Strong influence of the Mn3+ content on the binding energy of the lattice polarons in manganese perovskites [J].

De Teresa, JM ;

Dorr, K ;

Muller, KH ;

Schultz, L ;

Chakalova, RI .

PHYSICAL REVIEW B, 1998, 58 (10) :R5928-R5931

[19] SLOW ELECTRONS IN A POLAR CRYSTAL [J].

FEYNMAN, RP .

PHYSICAL REVIEW, 1955, 97 (03) :660-665

[20] MOBILITY OF SLOW ELECTRONS IN A POLAR CRYSTAL [J].

FEYNMAN, RP ;

HELLWARTH, RW ;

IDDINGS, CK ;

PLATZMAN, PM .

PHYSICAL REVIEW, 1962, 127 (04) :1004-&

← 1 2 3 4 5 →