Magnetic and magnetoimpurity charge-carrier scattering at the double exchange

被引：18

作者：

Nagaev, EL ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142092, Moscow Region, Russia

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.58.816

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Charge-carrier scattering in double-exchange ferromagnetic systems is calculated. First, the pure magnetic scattering is considered both in the spin-wave and paramagnetic regions. Then the magnetoimpurity scattering is treated when at finite temperatures microregions with enhanced magnetization arise close to ionized donors or accepters, and these static fluctuations of magnetization cause temperature-dependent carrier scattering. The latter mechanism is found to be much more powerful than the former, which confirms the concept that peculiar features of the colossal-magnetoresistance materials are determined by the magnetoimpurity scattering. [S0163-1829(98)05218-7].

引用

页码：816 / 826

页数：11

共 26 条

[1]

ANDERSON PW, 1955, PHYS REV, V100, P675, DOI DOI 10.1103/PHYSREV.100.675

[2]

Baker Jr G. A., 1961, J. Math. Anal. Appl, V2, P21, DOI DOI 10.1016/0022-247X(61)90042-7

[3] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[4]

GRIGIN AP, 1975, FIZ TVERD TELA+, V17, P2614

[5]

Lifshits E. M., 1978, STATISTICHESKAYA F 2

[6] DOUBLE EXCHANGE ALONE DOES NOT EXPLAIN THE RESISTIVITY OF LA1-XSRXMNO3 [J].

MILLIS, AJ ;

LITTLEWOOD, PB ;

SHRAIMAN, BI .

PHYSICAL REVIEW LETTERS, 1995, 74 (25) :5144-5147

[7] Electronic Hamiltonian for transition-metal oxide compounds [J].

MullerHartmann, E ;

Dagotto, E .

PHYSICAL REVIEW B, 1996, 54 (10) :R6819-R6822

[8]

Nagaev E. L., 1969, Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, V56, P1013

[9]

Nagaev E. L., 1969, Fizika Tverdogo Tela, V11, P2779

[10] On the giant magnetoresistance for degenerate ferromagnetic semiconductors of LaMnO3-type [J].

Nagaev, EL .

PHYSICS LETTERS A, 1996, 211 (05) :313-317

← 1 2 3 →