Synthesis and properties of superconducting T'-R2CuO4 (R=Pr, Nd, Sm, Eu, Gd)

被引：52

作者：

Matsumoto, Osamu ^{[1
]}

Utsuki, Aya ^{[1
]}

Tsukada, Akio ^{[2
]}

Yamamoto, Hideki ^{[3
]}

Manabe, Takaaki ^{[4
]}

Naito, Michio ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Dept Appl Phys, Koganei, Tokyo 1848588, Japan

[2] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[3] NTT Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 10期

关键词：

antiferromagnetic materials; europium compounds; gadolinium compounds; high-temperature superconductors; neodymium compounds; praseodymium compounds; samarium compounds; superconducting thin films; superconducting transition temperature; T'-STRUCTURE; CRYSTAL; DIFFRACTION; LA2CUO4;

D O I：

10.1103/PhysRevB.79.100508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The parent compounds of high-T-c cuprates have long been considered to be antiferromagnetic insulators. In this Rapid Communication, however, we report that superconductivity is achieved in T-'-R2CuO4 (R=Pr, Nd, Sm, Eu, Gd). Superconducting T-'-R2CuO4 films were synthesized by using metal-organic decomposition. The highest T-c of T-'-R2CuO4 is over 30 K, substantially higher than "electron-doped" analogs. Remarkably, Gd2CuO4, even the derivatives of which have not shown superconductivity so far, gets superconducting with T-c(onset) as high as similar to 20 K. The implication of our results is briefly discussed.

引用

页数：4

共 25 条

[1] EXTENDED SUPERCONDUCTING CONCENTRATION RANGE OBSERVED IN PR2-XCEXCUO4-DELTA [J].

BRINKMANN, M ;

REX, T ;

BACH, H ;

WESTERHOLT, K .

PHYSICAL REVIEW LETTERS, 1995, 74 (24) :4927-4930

[2] NEW PHASES INDUCED BY HYDROGEN REDUCTION AND BY SUBSEQUENT OXIDATION OF LA2CUO4, PR2CUO4, ND2CUO4, SM2CUO4, EU2CUO4, GD2CUO4 [J].

CHOU, FC ;

CHO, JH ;

MILLER, LL ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1990, 42 (10) :6172-6180

[3] Hole superconductivity in the electron-doped superconductor Pr2-xCexCuO4 [J].

Dagan, Y. ;

Greene, R. L. .

PHYSICAL REVIEW B, 2007, 76 (02)

[4] Different roles of cerium substitution and oxygen reduction in transport in Pr2-xCexCuO4 thin films [J].

Gauthier, J. ;

Gagne, S. ;

Renaud, J. ;

Gosselin, M. -E. ;

Fournier, P. ;

Richard, P. .

PHYSICAL REVIEW B, 2007, 75 (02)

[5]

HURD CM, 1972, HALL EFFECT METALS A, pCH2

[6] Low-temperature synthesis of La2CuO4 with the T′-structure from molten hydroxides [J].

Imai, Yoshinori ;

Kato, Masatsune ;

Takarabe, Yuichiro ;

Noji, Takashi ;

Koike, Yoji .

CHEMISTRY OF MATERIALS, 2007, 19 (15) :3584-3585

[7] Superconductivity phase diagrams for the electron-doped cuprates R2-xCexCuO4 (R=La, Pr, Nd, Sm, and Eu) [J].

Krockenberger, Y. ;

Kurian, J. ;

Winkler, A. ;

Tsukada, A. ;

Naito, M. ;

Alff, L. .

PHYSICAL REVIEW B, 2008, 77 (06)

[8] ON THE ABSENCE OF SUPERCONDUCTIVITY IN GD2-XCEXCUO4 [J].

MANTHIRAM, A ;

ZHU, YT .

PHYSICA C, 1994, 226 (1-2) :165-169

[9] Superconductivity in undoped T′-RE2CuO4 with Tc over 30 K [J].

Matsumoto, O. ;

Utsuki, A. ;

Tsukada, A. ;

Yamamoto, H. ;

Manabe, T. ;

Naito, M. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2008, 468 (15-20) :1148-1151

[10] Epitaxy-stabilized n-type superconducting cuprates [J].

Naito, M ;

Karimoto, S ;

Tsukada, A .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (12) :1663-1668

← 1 2 3 →