Manganites at quarter filling: Role of Jahn-Teller interactions

被引：22

作者：

Bala, J

Horsch, P

Mack, F

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30059 Krakow, Poland

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.69.094415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have analyzed different correlation functions in a realistic spin-orbital model for half-doped manganites. Using a finite-temperature diagonalization technique the CE phase was found in the charge-ordered phase in the case of small antiferromagnetic interactions between t(2g) electrons. It is shown that the ingredient responsible for stabilization of the CE-type spin and orbital-ordered state is the cooperative Jahn-Teller (JT) interaction between next-nearest Mn+3 neighbors mediated by the breathing mode distortion of Mn+4 octahedra and displacements of Mn+4 ions. The topological phase factor in the Mn-Mn hopping leading to gap formation in one-dimensional models for the CE phase as well as the nearest neighbor JT coupling are not able to produce the zigzag chains typical for the CE phase in our model.

引用

收藏

页数：15

相关论文

共 73 条

[1] Interplay of charge and orbital ordering in manganese perovskites [J].

Ahn, KH ;

Millis, AJ .

PHYSICAL REVIEW B, 1998, 58 (07) :3697-3703

[2]

ANDERSON PW, 1955, PHYS REV, V100, P675, DOI DOI 10.1103/PHYSREV.100.675

[3] Charge ordering and phase competition in the layered perovskite LaSr2Mn2O7 [J].

Argyriou, DN ;

Bordallo, HN ;

Campbell, BJ ;

Cheetham, AK ;

Cox, DE ;

Gardner, JS ;

Hanif, K ;

dos Santos, A ;

Strouse, GF .

PHYSICAL REVIEW B, 2000, 61 (22) :15269-15276

[4] Change in charge and orbital alignment upon antiferromagnetic transition in the A-site-ordered perovskite manganese oxide RBaMn2O6 (R=Tb and Sm) -: art. no. 140408 [J].

Arima, T ;

Akahoshi, D ;

Oikawa, K ;

Kamiyama, T ;

Uchida, M ;

Matsui, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 2002, 66 (14) :1-4

[5] Quasiparticles and the structure of orbital polarons in ferromagnetic LaMnO3 -: art. no. 134420 [J].

Bala, J ;

Oles, AM ;

Horsch, P .

PHYSICAL REVIEW B, 2002, 65 (13) :1-15

[6] Orbital-lattice polarons in ferromagnetic LaMnO3 -: art. no. 184414 [J].

Bala, J ;

Oles, AM ;

Sawatzky, GA .

PHYSICAL REVIEW B, 2002, 65 (18) :1844141-18441410

[7] Jahn-Teller effect on orbital ordering and dynamics in ferromagnetic LaMnO3 [J].

Bala, J ;

Oles, AM .

PHYSICAL REVIEW B, 2000, 62 (10) :R6085-R6088

[8] ELECTRONIC-STRUCTURE OF 3D-TRANSITION-METAL COMPOUNDS BY ANALYSIS OF THE 2P CORE-LEVEL PHOTOEMISSION SPECTRA [J].

BOCQUET, AE ;

MIZOKAWA, T ;

SAITOH, T ;

NAMATAME, H ;

FUJIMORI, A .

PHYSICAL REVIEW B, 1992, 46 (07) :3771-3784

[9] Strain selection of charge and orbital ordering patterns in half-doped manganites -: art. no. 100401 [J].

Calderón, MJ ;

Millis, AJ ;

Ahn, KH .

PHYSICAL REVIEW B, 2003, 68 (10)

[10] Anomalous melting transition of the charge-ordered state in manganites [J].

Chen, CH ;

Mori, S ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 1999, 83 (23) :4792-4795

← 1 2 3 4 5 6 7 8 →