Field-induced orbital order-disorder transition in an A-type antiferromagnetic manganite:: High-field study of Nd0.45Sr0.55MnO3 -: art. no. 024408

被引：14

作者：

Hayashi, T ^{[1
]}

Miura, N

Noda, K

Kuwahara, H

Okamoto, S

Ishihara, S

Maekawa, S

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Sophia Univ, Dept Phys, Tokyo 1028554, Japan

[3] JST, PRESTO, Kawaguchi, Saitama, Japan

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.65.024408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization and magnetoresistance. were measured in A-type antiferromagnet Nd0.45Sr0.55MnO3 utilizing pulsed magnetic fields up to 45 T. We have observed a ferromagnetic transition accompanied by a discontinuous decrease of resistivity. The temperature dependence of the resistivity in the ferromagnetic state showed characteristics of a three-dimensional metal. The observed phenomena are explained in terms of simultaneous destruction of the d(x2-y2) orbital ordering and the A-type anti ferromagnetic spin ordering by magnetic field.

引用

页码：1 / 5

页数：5

共 27 条

[1] Antiferromagnetic metallic state in doped manganites [J].

Akimoto, T ;

Maruyama, Y ;

Moritomo, Y ;

Nakamura, A ;

Hirota, K ;

Ohoyama, K ;

Ohashi, M .

PHYSICAL REVIEW B, 1998, 57 (10) :R5594-R5597

[2] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

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

[3] Transition between two ferromagnetic states driven by orbital ordering in La0.88Sr0.12MnO3 [J].

Endoh, Y ;

Hirota, K ;

Ishihara, S ;

Okamoto, S ;

Murakami, Y ;

Nishizawa, A ;

Fukuda, T ;

Kimura, H ;

Nojiri, H ;

Kaneko, K ;

Maekawa, S .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4328-4331

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

FURUKAWA, N .

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

[5] Orbital liquid in perovskite transition-metal oxides [J].

Ishihara, S ;

Yamanaka, M ;

Nagaosa, N .

PHYSICAL REVIEW B, 1997, 56 (02) :686-692

[6] Effective Hamiltonian in manganites: Study of the orbital and spin structures [J].

Ishihara, S ;

Inoue, J ;

Maekawa, S .

PHYSICAL REVIEW B, 1997, 55 (13) :8280-8286

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

Jaime, M ;

Lin, P ;

Salamon, MB ;

Han, PD .

PHYSICAL REVIEW B, 1998, 58 (10) :R5901-R5904

[8] Magnetic ordering and relation to the metal-insulator transition in Pr1-xSrxMnO3 and Nd1-xSrxMnO3 with x similar to 1/2 [J].

Kawano, H ;

Kajimoto, R ;

Yoshizawa, H ;

Tomioka, Y ;

Kuwahara, H ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1997, 78 (22) :4253-4256

[9] Two-dimensional charge-transport and spin-valve effect in the layered antiferromagnet Nd0.45Sr0.55MnO3 [J].

Kuwahara, H ;

Okuda, T ;

Tomioka, Y ;

Asamitsu, A ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4316-4319

[10] Spin-charge-lattice coupled phase transitions in bandwidth-controlled systems: (Nd,Sm)(1/2)Sr1/2MnO3 [J].

Kuwahara, H ;

Moritomo, Y ;

Tomioka, Y ;

Asamitsu, A ;

Kasai, M ;

Kumai, R ;

Tokura, Y .

PHYSICAL REVIEW B, 1997, 56 (15) :9386-9396

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