Lattice-spin mechanism in colossal magnetoresistive manganites -: art. no. 136401

被引：60

作者：

Vergés, JA

Martín-Mayor, V

Brey, L

机构：

[1] CSIC, Inst Ciencia Mat, Madrid 28049, Spain

[2] Univ Roma La Sapienza, Dipartimento Fis, Ist Nazl Fis Nucl, INFM,SMC, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.88.136401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a single-orbital double-exchange model, coupled with cooperative phonons (the so called breathing modes of the oxygen octahedra in manganites). The model is studied with Monte Carlo simulations. For a finite range of doping and coupling constants, a first-order metal-insulator phase transition is found, which coincides with the paramagnetic-ferromagnetic phase transition. The insulating state is due to the self-trapping of every carrier within an oxygen octahedron distortion.

引用

收藏

页数：4

相关论文

共 35 条

[1] Charge ordering and polaron formation in the magnetoresistive oxide La0.7Ca0.3MnO3 [J].

Adams, CP ;

Lynn, JW ;

Mukovskii, YM ;

Arsenov, AA ;

Shulyatev, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3954-3957

[2] Variational mean-field approach to the double-exchange model -: art. no. 054411 [J].

Alonso, JL ;

Fernández, LA ;

Guinea, F ;

Laliena, V ;

Martín-Mayor, V .

PHYSICAL REVIEW B, 2001, 63 (05)

[3] Monte Carlo determination of the phase diagram of the double-exchange model -: art. no. 054408 [J].

Alonso, JL ;

Capitán, JA ;

Fernández, LA ;

Guinea, R ;

Martín-Mayor, V .

PHYSICAL REVIEW B, 2001, 64 (05) :0544081-0544088

[4] Discontinuous transitions in double-exchange materials -: art. no. 064416 [J].

Alonso, JL ;

Fernández, LA ;

Guinea, F ;

Laliena, V ;

Martín-Mayor, V .

PHYSICAL REVIEW B, 2001, 63 (06)

[5] Hybrid Monte Carlo algorithm for the double exchange model [J].

Alonso, JL ;

Fernández, LA ;

Guinea, F ;

Laliena, V ;

Martín-Mayor, V .

NUCLEAR PHYSICS B, 2001, 596 (03) :587-610

[6] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

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

[7] Phase separation in double-exchange systems [J].

Arovas, DP ;

Gómez-Santos, G ;

Guinea, F .

PHYSICAL REVIEW B, 1999, 59 (21) :13569-13572

[8] Some aspects of the phase diagram of double-exchange systems [J].

Arovas, DP ;

Guinea, F .

PHYSICAL REVIEW B, 1998, 58 (14) :9150-9155

[9] QUANTUM OSCILLATIONS OF HALL EFFECT OF A FERMION GAS WITH RANDOM IMPURITY SCATTERING [J].

BASTIN, A ;

LEWINER, C ;

BETBEDER.O ;

NOZIERES, P .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1971, 32 (08) :1811-&

[10] Colossal effects in transition metal oxides caused by intrinsic inhomogeneities [J].

Burgy, J ;

Mayr, M ;

Martin-Mayor, V ;

Moreo, A ;

Dagotto, E .

PHYSICAL REVIEW LETTERS, 2001, 87 (27) :277202-277202

← 1 2 3 4 →