Suppression of superconductivity in FeSe films under tensile strain

被引：100

作者：

Nie, Y. F. ^{[1
]}

Brahimi, E. ^{[1
]}

Budnick, J. I. ^{[1
]}

Hines, W. A. ^{[1
]}

Jain, M. ^{[1
]}

Wells, B. O. ^{[1
]}

机构：

[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 24期

关键词：

iron compounds; pulsed laser deposition; superconducting thin films; superconducting transition temperature; superconducting transitions; tensile strength; X-ray diffraction; 43; K; IRON; LAO1-XFXFEAS; SYSTEMS;

D O I：

10.1063/1.3155441

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the effect of tensile strain on the superconductivity in FeSe films. 50, 100, and 200 nm FeSe films were grown on MgO, SrTiO(3), and LaAlO(3) substrates by using a pulsed laser deposition technique. X-ray diffraction analysis showed that the tetragonal phase is dominant in all of our FeSe films. The 50 nm FeSe films on MgO and SrTiO(3) are under tensile strain, while the 50 nm FeSe film on LaAlO(3) and the other thick FeSe films are unstrained. Superconducting transitions have been observed in unstrained FeSe films with T(onset)approximate to 8 K, which is close to the bulk value. However, no sign of superconductivity has been observed in FeSe films under tensile strain down to 5 K. This is evidence to show that tensile strain suppresses superconductivity in FeSe films.

引用

页数：3

共 17 条

[1] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[2] Superconductivity at 43 K in SmFeAsO1-xFx [J].

Chen, X. H. ;

Wu, T. ;

Wu, G. ;

Liu, R. H. ;

Chen, H. ;

Fang, D. F. .

NATURE, 2008, 453 (7196) :761-762

[3] Magnetic order close to superconductivity in the iron-based layered LaO1-xFxFeAs systems [J].

de la Cruz, Clarina ;

Huang, Q. ;

Lynn, J. W. ;

Li, Jiying ;

Ratcliff, W., II ;

Zarestky, J. L. ;

Mook, H. A. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. ;

Dai, Pengcheng .

NATURE, 2008, 453 (7197) :899-902

[4]

GARBARINO G, ARXIV09033888V2

[5] Superconductivity in the PbO-type structure α-FeSe [J].

Hsu, Fong-Chi ;

Luo, Jiu-Yong ;

Yeh, Kuo-Wei ;

Chen, Ta-Kun ;

Huang, Tzu-Wen ;

Wu, Phillip M. ;

Lee, Yong-Chi ;

Huang, Yi-Lin ;

Chu, Yan-Yi ;

Yan, Der-Chung ;

Wu, Maw-Kuen .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (38) :14262-14264

[6] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

[7]

MARGADONNA S, ARXIV09032204V1

[8]

MATTHEWS JW, 1974, J CRYST GROWTH, V27, P118, DOI 10.1016/S0022-0248(74)80055-2

[9] Pressure-induced effects on the structure of the FeSe superconductor [J].

Millican, Jasmine N. ;

Phelan, Daniel ;

Thomas, Evan L. ;

Leao, Juscelino B. ;

Carpenter, Elisabeth .

SOLID STATE COMMUNICATIONS, 2009, 149 (17-18) :707-710

[10] Superconductivity at 27 K in tetragonal FeSe under high pressure [J].

Mizuguchi, Yoshikazu ;

Tomioka, Fumiaki ;

Tsuda, Shunsuke ;

Yamaguchi, Takahide ;

Takano, Yoshihiko .

APPLIED PHYSICS LETTERS, 2008, 93 (15)

← 1 2 →