Orbital ordering in La0.5Sr1.5MnO4 studied by soft x-ray linear dichroism -: art. no. 087202

被引：83

作者：

Huang, DJ ^{[1
]}

Wu, WB

Guo, GY

Lin, HJ

Hou, TY

Chang, CF

Chen, CT

Fujimori, A

Kimura, T

Huang, HB

Tanaka, A

Jo, T

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30077, Taiwan

[2] Natl Chiao Tung Univ, Inst Electrophys, Hsinchu 300, Taiwan

[3] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[4] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[5] Univ Tokyo, Dept Complex Sci & Engn, Tokyo 1130033, Japan

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

[7] Hiroshima Univ, Dept Quantum Matters, ADSM, Higashihiroshima 7398530, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.92.087202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We found that the conventional model of orbital-ordering of 3x(2)-r(2)/3y(2)-r(2) type in the e(g) states of La0.5Sr1.5MnO4 is incompatible with measurements of linear dichroism in the Mn 2p-edge x-ray absorption, whereas these e(g) states exhibit predominantly cross-type orbital ordering of x(2)-z(2)/y(2)-z(2). LDA+U band-structure calculations reveal that such a cross-type orbital-ordering results from a combined effect of antiferromagnetic structure, Jahn-Teller distortion, and on-site Coulomb interactions.

引用

页数：4

共 31 条

[1] Ab initio calculation of resonant x-ray scattering in manganites -: art. no. 060408 [J].

Benedetti, P ;

van den Brink, J ;

Pavarini, E ;

Vigliante, A ;

Wochner, P .

PHYSICAL REVIEW B, 2001, 63 (06) :604081-604084

[2] Critical reexamination of the experimental evidence of orbital ordering in LaMnO3 and La0.5Sr1.5MnO4 [J].

Benfatto, M ;

Joly, Y ;

Natoli, CR .

PHYSICAL REVIEW LETTERS, 1999, 83 (03) :636-639

[3] Orbital ordering in the manganites:: Resonant x-ray scattering predictions at the manganese LII and LIII edges [J].

Castleton, CWM ;

Altarelli, M .

PHYSICAL REVIEW B, 2000, 62 (02) :1033-1038

[4] Orbital ordering, Jahn-Teller distortion, and anomalous x-ray scattering in manganates [J].

Elfimov, IS ;

Anisimov, VI ;

Sawatzky, GA .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4264-4267

[5] Phase diagram of tetragonal manganites [J].

Fang, Z ;

Solovyev, IV ;

Terakura, K .

PHYSICAL REVIEW LETTERS, 2000, 84 (14) :3169-3172

[6] THEORY OF THE ROLE OF COVALENCE IN THE PEROVSKITE-TYPE MANGANITES [LA,M(II)]MNO3 [J].

GOODENOUGH, JB .

PHYSICAL REVIEW, 1955, 100 (02) :564-573

[7]

GUO G, UNPUB

[8] Comment on "Charge-orbital stripe structure in La1-xCaxMnO3 (x=1/2, 2/3)" [J].

Hotta, T ;

Dagotto, E ;

Koizumi, H ;

Takada, Y .

PHYSICAL REVIEW LETTERS, 2001, 86 (11) :2478-2478

[9] Strong linear dichroism in Mn L2,3 absorption predicted for orbital ordering in LaMnO3 [J].

Huang, HB ;

Shishidou, T ;

Jo, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (08) :2399-2402

[10]

HUANG HB, 2001, J PHYS SOC JPN, V71, P3094

← 1 2 3 4 →