The superconductor KxSr1-xFe2As2: normal state and superconducting properties

被引：35

作者：

Lv, B. ^{[3
]}

Gooch, M. ^{[1
,2
]}

Lorenz, B. ^{[1
,2
]}

Chen, F. ^{[1
,2
]}

Guloy, A. M. ^{[3
]}

Chu, C. W. ^{[1
,2
,4
,5
]}

机构：

[1] Univ Houston, TCSUH, Houston, TX 77204 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Univ Houston, Dept Chem, Houston, TX 77204 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[5] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

关键词：

PHASE-DIAGRAM; 43; K; COMPOUND; LIFEAS; EARTH; METAL;

D O I：

10.1088/1367-2630/11/2/025013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The normal state and superconducting properties are investigated in the phase diagram of KxSr1-xFe2As2 for 0 <= x <= 1. The ground state upper critical field, H-c2(0), is extrapolated from magnetic field- dependent resistivity measurements. H-c2(0) scales with the critical temperature, T-c, of the superconducting transition. In the normal state, the Seebeck coefficient is shown to experience a dramatic change near a critical substitution of x similar or equal to 0.3. This is associated with the formation of a spin density wave state above the superconducting transition temperature. The results provide strong evidence for the reconstruction of the Fermi surface with the onset of magnetic order.

引用

页数：12

共 31 条

[1] Low-frequency ac measurement of the Seebeck coefficient [J].

Chen, F ;

Cooley, JC ;

Hults, WL ;

Smith, JL .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (11) :4201-4206

[2] Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO1-xFxFeAs [J].

Chen, G. F. ;

Li, Z. ;

Wu, D. ;

Li, G. ;

Hu, W. Z. ;

Dong, J. ;

Zheng, P. ;

Luo, J. L. ;

Wang, N. L. .

PHYSICAL REVIEW LETTERS, 2008, 100 (24)

[3]

Chen GF, 2008, CHINESE PHYS LETT, V25, P3403, DOI 10.1088/0256-307X/25/9/083

[4]

Chen GF, 2008, CHINESE PHYS LETT, V25, P2235, DOI 10.1088/0256-307X/25/6/086

[5] Coexistence of the spin-density wave and superconductivity in Ba1-xKxFe2As2 [J].

Chen, H. ;

Ren, Y. ;

Qiu, Y. ;

Bao, Wei ;

Liu, R. H. ;

Wu, G. ;

Wu, T. ;

Xie, Y. L. ;

Wang, X. F. ;

Huang, Q. ;

Chen, X. H. .

EPL, 2009, 85 (01)

[6] 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

[7] Low-frequency method for magnetothermopower and Nernst effect measurements on single crystal samples at low temperatures and high magnetic fields [J].

Choi, ES ;

Brooks, JS ;

Qualls, JS ;

Song, YS .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (05) :2392-2397

[8] Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2 [J].

Ding, H. ;

Richard, P. ;

Nakayama, K. ;

Sugawara, K. ;

Arakane, T. ;

Sekiba, Y. ;

Takayama, A. ;

Souma, S. ;

Sato, T. ;

Takahashi, T. ;

Wang, Z. ;

Dai, X. ;

Fang, Z. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. .

EPL, 2008, 83 (04)

[9] Pressure-induced shift of Tc in KxSr1-xFe2As2 (x=0.2, 0.4, 0.7): Analogy to the high-Tc cuprate superconductors [J].

Gooch, Melissa ;

Lv, Bing ;

Lorenz, Bernd ;

Guloy, Arnold M. ;

Chu, Ching-Wu .

PHYSICAL REVIEW B, 2008, 78 (18)

[10] Strong coupling between magnetic and structural order parameters in SrFe2As2 [J].

Jesche, A. ;

Caroca-Canales, N. ;

Rosner, H. ;

Borrmann, H. ;

Ormeci, A. ;

Kasinathan, D. ;

Klauss, H. H. ;

Luetkens, H. ;

Khasanov, R. ;

Amato, A. ;

Hoser, A. ;

Kaneko, K. ;

Krellner, C. ;

Geibel, C. .

PHYSICAL REVIEW B, 2008, 78 (18)

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