Low-temperature electrical transport and double exchange in La0.67(Pb,Ca)0.33MnO3

被引：130

作者：

Jaime, M

Lin, P

Salamon, MB

Han, PD

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[2] Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.58.R5901

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The resistivity in the ferromagnetic state of flux-grown La(2/)3(Pb,Ca)(1/3)MnO3 single crystals, measured in magnetic fields up to 7 T, reveals a strong quadratic temperature dependence at and above 50 K. At lower temperatures, this contribution drops precipitously leaving the resistivity essentially temperature independent below 20 K. The Seebeek coefficient also reflects a change of behavior at the same temperature. We attribute this behavior to a cutoff of single magnon scattering processes at long wavelengths due to the polarized bands of a double-exchange ferromagnet.

引用

收藏

页码：R5901 / R5904

页数：4

相关论文

共 31 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

PHYSICAL REVIEW, 1955, 100 (02) :675-681

[2] Evolution of the low-frequency spin dynamics in ferromagnetic manganites [J].

Fernandez-Baca, JA ;

Dai, P ;

Hwang, HY ;

Kloc, C ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 1998, 80 (18) :4012-4015

[3] MAGNETORESISTANCE OF THE DOUBLE-EXCHANGE MODEL IN INFINITE DIMENSION [J].

FURUKAWA, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (08) :2734-2737

[4] TEMPERATURE-DEPENDENCE OF CONDUCTIVITY IN (LA,SR)MNO3 [J].

FURUKAWA, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (09) :3164-3167

[5] TRANSPORT-PROPERTIES OF THE KONDO-LATTICE MODEL IN THE LIMIT S=INFINITY AND D=INFINITY [J].

FURUKAWA, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (09) :3214-3217

[6] Low-temperature specific heat of La0.67Ba0.33MnO3 and La0.8Ca0.2MnO3 [J].

Hamilton, JJ ;

Keatley, EL ;

Ju, HL ;

Raychaudhuri, AK ;

Smolyaninova, VN ;

Greene, RL .

PHYSICAL REVIEW B, 1996, 54 (21) :14926-14929

[7]

Han P., UNPUB

[8] Ferromagnetic ordering and unusual magnetic ion dynamics in La0.67Ca0.33MnO3 [J].

Heffner, RH ;

Le, LP ;

Hundley, MF ;

Neumeier, JJ ;

Luke, GM ;

Kojima, K ;

Nachumi, B ;

Uemura, YJ ;

MacLaughlin, DE ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 1996, 77 (09) :1869-1872

[9] Thermoelectric power of La1-xCaxMnO3+delta: Inadequacy of the nominal Mn3+/4+ valence approach [J].

Hundley, MF ;

Neumeier, JJ .

PHYSICAL REVIEW B, 1997, 55 (17) :11511-11515

[10] Magnetothermopower in La0.67Ca0.33MnO3 thin films [J].

Jaime, M ;

Salamon, MB ;

Pettit, K ;

Rubinstein, M ;

Treece, RE ;

Horwitz, JS ;

Chrisey, DB .

APPLIED PHYSICS LETTERS, 1996, 68 (11) :1576-1578

← 1 2 3 4 →