Transversely modulated crystal structure of charge-orbital ordered manganites Nd1-xSr1+xMnO4 (x=2/3, 3/4) -: art. no. 060405

被引：33

作者：

Nagai, T ^{[1
]}

Kimura, T

Yamazaki, A

Asaka, T

Kimoto, K

Tokura, Y

Matsui, Y

机构：

[1] Waseda Univ, Dept Resources & Environm Engn, Tokyo 1698555, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[3] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.65.060405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The crystallographic superstructures of the charge-orbital ordered phases were investigated for layered manganites, Nd1-xSr1+xMnO4 (x=2/3, 3/4), by high-resolution electron microscopy (HREM) at low temperature. Transverse and sinusoidal structural distortion giving rise to the superstructure were successfully observed in HREM images at 80 K. We also performed the simulations of electron diffraction patterns and HREM images, which support the transverse modulations. The observation implies that a new kind of "Wigner-crystal" model-accompanied with a charge-density wave (CDW) of e(g) electrons-best explains the charge-orbital ordered state in the manganites.

引用

页码：1 / 4

页数：4

共 14 条

[1] Charge-ordered stripes in La1-xCaxMnO3 with x>0.5 [J].

Chen, CH ;

Cheong, SW ;

Hwang, HY .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :4326-4330

[2] Commensurate to incommensurate charge ordering and its real-space images in La0.5Ca0.5MnO3 [J].

Chen, CH ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 1996, 76 (21) :4042-4045

[3] Structural, thermal, transport, and magnetic properties of the charge-ordered La1/3Ca2/3MnO3 oxide [J].

Fernández-Díaz, MT ;

Martínez, JL ;

Alonso, JM ;

Herrero, E .

PHYSICAL REVIEW B, 1999, 59 (02) :1277-1284

[4] Topological scenario for stripe formation in manganese oxides [J].

Hotta, T ;

Takada, Y ;

Koizumi, H ;

Dagotto, E .

PHYSICAL REVIEW LETTERS, 2000, 84 (11) :2477-2480

[5] Metal-insulator transitions [J].

Imada, M ;

Fujimori, A ;

Tokura, Y .

REVIEWS OF MODERN PHYSICS, 1998, 70 (04) :1039-1263

[6]

KIMURA T, IN PRESS PHYS REV B

[7] Structural properties and charge-ordering transition in LaSr2Mn2O7 [J].

Li, JQ ;

Matsui, Y ;

Kimura, T ;

Tokura, Y .

PHYSICAL REVIEW B, 1998, 57 (06) :R3205-R3208

[8] Pairing of charge-ordered stripes in (La,Ca)MnO3 [J].

Mori, S ;

Chen, CH ;

Cheong, SW .

NATURE, 1998, 392 (6675) :473-476

[9] MAGNETIC AND ELECTRONIC-PROPERTIES IN HOLE-DOPED MANGANESE OXIDES WITH LAYERED STRUCTURES - LA1-XSR1+XMNO4 [J].

MORITOMO, Y ;

TOMIOKA, Y ;

ASAMITSU, A ;

TOKURA, Y ;

MATSUI, Y .

PHYSICAL REVIEW B, 1995, 51 (05) :3297-3300

[10] Direct observation of charge and orbital ordering in La0.5Sr1.5MnO4 [J].

Murakami, Y ;

Kawada, H ;

Kawata, H ;

Tanaka, M ;

Arima, T ;

Moritomo, Y ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1998, 80 (09) :1932-1935

← 1 2 →