Epitaxial strain and superconductivity in La2-xSrxCuO4 thin films -: art. no. 107001

被引：268

作者：

Bozovic, I ^{[1
]}

Logvenov, G ^{[1
]}

Belca, I ^{[1
]}

Narimbetov, B ^{[1
]}

Sveklo, I ^{[1
]}

机构：

[1] Oxxel GmbH, D-28359 Bremen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.89.107001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The report that T-c was doubled in underdoped La2-xSrxCuO4 films under compressive epitaxial strain has stirred great interest. We show that such films are extremely sensitive to oxygen intake, even at very low temperature, with startling consequences including colossal lattice expansion and a crossover from semiconductor to metallic behavior. We can bring T-c up to 40 K in La2CuO4 films on SrTiO3 substrates-without any Sr doping and under tensile strain. On LaSrAlO4 substrates, we reached T-c=51.5 K, the highest so far in La2-xSrxCuO4.

引用

页码：107001 / 107001

页数：4

共 19 条

[1] Atomic-layer engineering of superconducting oxides:: Yesterday, today, tomorrow [J].

Bozovic, I .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2001, 11 (01) :2686-2695

[2] Thickness dependence of the superconducting transition temperature of La2-xSrxCuO4 films [J].

Chen, XJ ;

Lin, HQ ;

Gong, CD .

PHYSICAL REVIEW B, 2000, 61 (14) :9782-9785

[3] SUPERCONDUCTIVITY UP TO 164-K IN HGBA2CAM-1CUMO2M+2+DELTA (M=1,2, AND 3) UNDER QUASI-HYDROSTATIC PRESSURES [J].

GAO, L ;

XUE, YY ;

CHEN, F ;

XIONG, Q ;

MENG, RL ;

RAMIREZ, D ;

CHU, CW ;

EGGERT, JH ;

MAO, HK .

PHYSICAL REVIEW B, 1994, 50 (06) :4260-4263

[4] PRESSURE-DEPENDENCE OF PHASE-TRANSITION TEMPERATURES IN OXYGENATED SINGLE-CRYSTALLINE LA2CUO4.035 [J].

ITOH, M ;

HUANG, TK ;

YU, JD ;

INAGUMA, Y ;

NAKAMURA, T .

PHYSICAL REVIEW B, 1995, 51 (02) :1286-1289

[5] Doubling the critical temperature of La1.9Sr0.1CuO4 using epitaxial strain [J].

Locquet, JP ;

Perret, J ;

Fompeyrine, J ;

Mächler, E ;

Seo, JW ;

Van Tendeloo, G .

NATURE, 1998, 394 (6692) :453-456

[6] Changes of Tc under epitaxial strain:: Implications for the mechanism of superconductivity [J].

Locquet, JP ;

Perret, J ;

Seo, JW ;

Fompeyrine, J .

SUPERCONDUCTING AND RELATED OXIDES: PHYSICS AND NANOENGINEERING III, 1998, 3481 :248-264

[7] Oxygen nonstoichiometry of MBE-grown cuprate films to lose or give high-Tc superconductivity [J].

Naito, M ;

Sato, H ;

Yamamoto, H .

SUPERCONDUCTING AND RELATED OXIDES: PHYSICS AND NANOENGINEERING III, 1998, 3481 :214-225

[8] STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF LA2-XSRXCUO4 AS A FUNCTION OF SR CONTENT [J].

RADAELLI, PG ;

HINKS, DG ;

MITCHELL, AW ;

HUNTER, BA ;

WAGNER, JL ;

DABROWSKI, B ;

VANDERVOORT, KG ;

VISWANATHAN, HK ;

JORGENSEN, JD .

PHYSICAL REVIEW B, 1994, 49 (06) :4163-4175

[9] Superconducting thin films of La2CuO4+delta by oxygen doping using ozone [J].

Sato, H ;

Naito, M ;

Yamamoto, H .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1997, 280 (03) :178-186

[10] La2-xSrxCuOy epitaxial thin films (x=0 to 2):: Structure, strain, and superconductivity [J].

Sato, H ;

Tsukada, A ;

Naito, M ;

Matsuda, A .

PHYSICAL REVIEW B, 2000, 61 (18) :12447-12456

← 1 2 →