Neutron-scattering studies of magnetic excitations in La1-xSrxMnO3: A dimensional crossover

被引：26

作者：

Hirota, K ^{[1
]}

Kaneko, N ^{[1
]}

Nishizawa, A ^{[1
]}

Endoh, Y ^{[1
]}

Martin, MC ^{[1
]}

Shirane, G ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICA B | 1997年 / 237卷

关键词：

magnetoresistance; spin waves; La1-xSrxMnO3;

D O I：

10.1016/S0921-4526(97)00039-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have found a strong planar ferromagnetic and a weak antiferromagnetic interplane couplings in the spin waves of LaMnO3. Upon doping holes, the anisotropic character initially becomes enhanced. However, it is taken over by the isotropic ferromagnetic spin waves when the Sr concentration x reaches similar to 0.1, much lower than the compositional metal-insulator transition range (x similar to 0.17).

引用

页码：36 / 38

页数：3

共 5 条

[1] Electronic structure and effective Hamiltonian in perovskite Mn oxides
Ishihara, S
Inoue, J
Maekawa, S
[J]. PHYSICA C, 1996, 263 (1-4): : 130 - 133
[2] Ferromagnetism-induced reentrant structural transition and phase diagram of the lightly doped insulator La1-xSrxMnO3 (x<=0.17)
Kawano, H
Kajimoto, R
Kubota, M
Yoshizawa, H
[J]. PHYSICAL REVIEW B, 1996, 53 (22) : 14709 - 14712
[3] Magnetism and structural distortion in the La0.7Sr0.3MnO3 metallic ferromagnet
Martin, MC
Shirane, G
Endoh, Y
Hirota, K
Moritomo, Y
Tokura, Y
[J]. PHYSICAL REVIEW B, 1996, 53 (21) : 14285 - 14290
[4] Crucial role of the lattice distortion in the magnetism of LaMnO3
Solovyev, I
Hamada, N
Terakura, K
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (25) : 4825 - 4828
[5] GIANT MAGNETOTRANSPORT PHENOMENA IN FILLING-CONTROLLED KONDO-LATTICE SYSTEM - LA1-XSRXMNO3
TOKURA, Y
URUSHIBARA, A
MORITOMO, Y
ARIMA, T
ASAMITSU, A
KIDO, G
FURUKAWA, N
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (11) : 3931 - 3935

← 1 →