Direct observation of incommensurate modulation in phase-separated Cu-rich La2CuO4.003

被引：31

作者：

Dong, XL ^{[1
]}

Dong, ZF

Zhao, BR

Zhao, ZX

Duan, XF

Peng, LM

Huang, WW

Xu, B

Zhang, YZ

Guo, SQ

Zhao, LH

Li, L

机构：

[1] Chinese Acad Sci, Natl Lab Superconduct, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[3] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China

[4] Chinese Acad Sci, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.80.2701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An incommensurate modulation was observed directly for the first time by transmission electron microscopy in a phase-separated Cu-rich La2CuO4.003 crystal at room temperature and at 93 K. After annealing in Ar atmosphere, both incommensurate modulation and phase separation disappeared. It is concluded that the incommensurate modulation is attributed to the phase separation, while the occurrence of phase separation in the sample with such a low excess oxygen content results from the enhanced antiferromagnetic interaction due to the Cu dopant.

引用

页码：2701 / 2704

页数：4

共 31 条

[11]

JOHNSTON DC, 1994, PHASE SEPARATION CUP, P82

[12] SUPERCONDUCTING PHASE OF LA2CUO4+DELTA - A SUPERCONDUCTING COMPOSITION RESULTING FROM PHASE-SEPARATION [J].

JORGENSEN, JD ;

DABROWSKI, B ;

PEI, SY ;

HINKS, DG ;

SODERHOLM, L ;

MOROSIN, B ;

SCHIRBER, JE ;

VENTURINI, EL ;

GINLEY, DS .

PHYSICAL REVIEW B, 1988, 38 (16) :11337-11345

[13] SPECIFIC-HEAT AND SUPERCONDUCTIVITY IN (LA1-XCAX)2CUO4 [J].

KITAZAWA, K ;

SAKAI, M ;

UCHIDA, S ;

TAKAGI, H ;

KISHIO, K ;

KANBE, S ;

TANAKA, S ;

FUEKI, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1987, 26 (04) :L342-L344

[14] ELECTRONIC PHASE-SEPARATION IN LA-CUPRATES - ON THE ROLE OF HOLE AND OXYGEN DIFFUSION [J].

KREMER, RK ;

HIZHNYAKOV, V ;

SIGMUND, E ;

SIMON, A ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1993, 91 (02) :169-174

[15] Temperature-dependent modulation amplitude of the CuO2 superconducting lattice in La2CuO4.1 [J].

Lanzara, A ;

Saini, NL ;

Bianconi, A ;

Hazemann, JL ;

Soldo, Y ;

Chou, FC ;

Johnston, DC .

PHYSICAL REVIEW B, 1997, 55 (14) :9120-9124

[16] Carrier-controlled doping efficiency in La2CuO4+delta [J].

Li, ZG ;

Feng, HH ;

Yang, ZY ;

Hamed, A ;

Ting, ST ;

Hor, PH ;

Bhavaraju, S ;

DiCarlo, JF ;

Jacobson, AJ .

PHYSICAL REVIEW LETTERS, 1996, 77 (27) :5413-5416

[17] STUDY OF AN ISING-MODEL WITH COMPETING LONG-RANGE AND SHORT-RANGE INTERACTIONS [J].

LOW, U ;

EMERY, VJ ;

FABRICIUS, K ;

KIVELSON, SA .

PHYSICAL REVIEW LETTERS, 1994, 72 (12) :1918-1921

[18] STRUCTURE OF THE SUPERCONDUCTING LA2CUO4+DELTA PHASES (DELTA-APPROXIMATE-TO-0.08,0.12) PREPARED BY ELECTROCHEMICAL OXIDATION [J].

RADAELLI, PG ;

JORGENSEN, JD ;

SCHULTZ, AJ ;

HUNTER, BA ;

WAGNER, JL ;

CHOU, FC ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1993, 48 (01) :499-510

[19] CHARACTERISTICS OF MIXED PHASE SUPERCONDUCTIVITY IN OXYGENATED LA2CUO4+DELTA [J].

RYDER, J ;

MIDGLEY, PA ;

EXLEY, R ;

BEYNON, RJ ;

YATES, DL ;

AFALFIZ, L ;

WILSON, JA .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 173 (1-2) :9-24

[20] STOICHIOMETRY OF BULK SUPERCONDUCTING LA2CUO4+DELTA - A SUPERCONDUCTING SUPEROXIDE [J].

SCHIRBER, JE ;

MOROSIN, B ;

MERRILL, RM ;

HLAVA, PF ;

VENTURINI, EL ;

KWAK, JF ;

NIGREY, PJ ;

BAUGHMAN, RJ ;

GINLEY, DS .

PHYSICA C, 1988, 152 (01) :121-123

← 1 2 3 4 →