Combined effect of bond and potential disorder in half-doped manganites

被引：13

作者：

Kumar, Sanjeev ^{[1
]}

Kampf, Arno P. ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.100.076406

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analyze the effects of both bond and potential disorder in the vicinity of a first-order metal insulator transition in a two-band model for manganites using a real-space Monte Carlo method. Our results reveal a novel charge-ordered state coexisting with spin-glass behavior. We provide the basis for understanding the phase diagrams of half-doped manganites, and contrast the effects of bond and potential disorder and the combination of both.

引用

页数：4

共 23 条

[11] Phase diagram of manganese oxides [J].

Maezono, R ;

Ishihara, S ;

Nagaosa, N .

PHYSICAL REVIEW B, 1998, 58 (17) :11583-11596

[12] Size mismatch: A crucial factor for generating a spin-glass insulator in manganites [J].

Maignan, A ;

Martin, C ;

Van Tendeloo, G ;

Hervieu, M ;

Raveau, B .

PHYSICAL REVIEW B, 1999, 60 (22) :15214-15219

[13] Coexistence of long-ranged charge and orbital order and spin-glass state in single-layered manganites with weak quenched disorder [J].

Mathieu, R. ;

He, J. P. ;

Yu, X. Z. ;

Kaneko, Y. ;

Uchida, M. ;

Lee, Y. S. ;

Arima, T. ;

Asamitsu, A. ;

Tokura, Y. .

EPL, 2007, 80 (03)

[14] Charge ordering via electron-electron interactions in the colossal-magnetoresistive manganites [J].

Mishra, SK ;

Pandit, R ;

Satpathy, S .

PHYSICAL REVIEW B, 1997, 56 (05) :2316-2319

[15] Competing orders and disorder-induced insulator to metal transition in manganites [J].

Motome, Y ;

Furukawa, N ;

Nagaosa, N .

PHYSICAL REVIEW LETTERS, 2003, 91 (16) :167204-167204

[16] Transport mechanisms in doped LaMnO3: Evidence for polaron formation [J].

Palstra, TTM ;

Ramirez, AP ;

Cheong, SW ;

Zegarski, BR ;

Schiffer, P ;

Zaanen, J .

PHYSICAL REVIEW B, 1997, 56 (09) :5104-5107

[17] Cation disorder and the metal-insulator transition temperature in manganese oxide perovskites [J].

Rodriguez-Martinez, LM ;

Attfield, JP .

PHYSICAL REVIEW B, 1998, 58 (05) :2426-2429

[18] Insulator-to-metal transition induced by disorder in a model for manganites [J].

Sen, C ;

Alvarez, G ;

Dagotto, E .

PHYSICAL REVIEW B, 2004, 70 (06) :064428-1

[19] Competing ferromagnetic and charge-ordered states in models for manganites: The origin of the colossal magnetoresistance effect [J].

Sen, Cengiz ;

Alvarez, Gonzalo ;

Dagotto, Elbio .

PHYSICAL REVIEW LETTERS, 2007, 98 (12)

[20] SIMPLIFIED LCAO METHOD FOR THE PERIODIC POTENTIAL PROBLEM [J].

SLATER, JC ;

KOSTER, GF .

PHYSICAL REVIEW, 1954, 94 (06) :1498-1524

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