Noise probe of the dynamic phase separation in La2/3Ca1/3MnO3

被引：112

作者：

Raquet, B ^{[1
]}

Anane, A ^{[1
]}

Wirth, S ^{[1
]}

Xiong, P ^{[1
]}

von Molnár, S ^{[1
]}

机构：

[1] Florida State Univ, MARTECH, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.84.4485

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Giant random telegraph noise (RTN) in the resistance fluctuation of a macroscopic film of perovskite-type manganese oxide La2/3Ca1/3MnO3 has been observed at various temperatures ranging from 4 to 170 K, well below the Curie temperature (T-C approximate to 210 K). The amplitudes of the two-level fluctuations vary from 0.01% to 0.2%. We discuss the origin of the RTN to be a dynamic mixed-phase percolative conduction process, where manganese clusters switch back and forth between two phases that differ in their conductivity and magnetization.

引用

页码：4485 / 4488

页数：4

共 31 条

[1] 1/f resistance noise in the large magnetoresistance manganites [J].

Alers, GB ;

Ramirez, AP ;

Jin, S .

APPLIED PHYSICS LETTERS, 1996, 68 (25) :3644-3646

[2] Colossal resistive relaxation effects in a Pr0.67Ca0.33MnO3 single crystal [J].

Anane, A ;

Renard, JP ;

Reversat, L ;

Dupas, C ;

Veillet, P ;

Viret, M ;

Pinsard, L ;

Revcolevschi, A .

PHYSICAL REVIEW B, 1999, 59 (01) :77-80

[3]

ANANE A, IN PRESS

[4] Lattice effects in La1-xCaxMnO3 (x=0→1):: Relationships between distortions, charge distribution, and magnetism [J].

Booth, CH ;

Bridges, F ;

Kwei, GH ;

Lawrence, JM ;

Cornelius, AL ;

Neumeier, JJ .

PHYSICAL REVIEW B, 1998, 57 (17) :10440-10454

[5] Mixed-valence manganites [J].

Coey, JMD ;

Viret, M ;

von Molnár, S .

ADVANCES IN PHYSICS, 1999, 48 (02) :167-293

[6] Magnetic characterization of self-organized ErAs clusters using telegraph noise spectroscopy [J].

Coppinger, F ;

Genoe, J ;

Maude, DK ;

Kleber, X ;

Rigal, LB ;

Gennser, U ;

Portal, JC ;

Singer, KE ;

Rutter, P ;

Taskin, T ;

Peaker, AR ;

Wright, AC .

PHYSICAL REVIEW B, 1998, 57 (12) :7182-7189

[7] Evidence for magnetic polarons in the magnetoresistive perovskites [J].

DeTeresa, JM ;

Ibarra, MR ;

Algarabel, PA ;

Ritter, C ;

Marquina, C ;

Blasco, J ;

Garcia, J ;

delMoral, A ;

Arnold, Z .

NATURE, 1997, 386 (6622) :256-259

[8] Spatially inhomogeneous metal-insulator transition in doped manganites [J].

Fäth, M ;

Freisem, S ;

Menovsky, AA ;

Tomioka, Y ;

Aarts, J ;

Mydosh, JA .

SCIENCE, 1999, 285 (5433) :1540-1542

[9] Colossal magnetoresistance in Ln1-xAxMnO3 perovskites [J].

Goodenough, JB .

AUSTRALIAN JOURNAL OF PHYSICS, 1999, 52 (02) :155-186

[10] Properties of manganites: Band and percolation approaches [J].

Gor'kov, LP ;

Kresin, VZ .

JOURNAL OF SUPERCONDUCTIVITY, 1999, 12 (01) :243-246

← 1 2 3 4 →