Superconductivity in Fe-Based Compound EuAFe4As4 (A = Rb and Cs)

被引:73
作者
Kawashima, Kenji [1 ,2 ]
Kinjo, Tatsuya [2 ,3 ]
Nishio, Taichiro [2 ,3 ]
Ishida, Shigeyuki [2 ]
Fujihisa, Hiroshi [2 ]
Gotoh, Yoshito [2 ]
Kihou, Kunihiro [2 ]
Eisaki, Hiroshi [2 ]
Yoshida, Yoshiyuki [2 ]
Iyo, Akira [2 ]
机构
[1] IMRA Mat R&D Co Ltd, Kariya, Aichi 4480032, Japan
[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
[3] Tokyo Univ Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan
关键词
TEMPERATURE; CRYSTAL;
D O I
10.7566/JPSJ.85.064710
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the discovery of a novel Fe-based superconductor EuAFe(4)As(4) (A = Rb, Cs) and describe its superconducting properties. EuAFe(4)As(4) has a tetragonal unit cell with a P4/mmm (No. 123) space group, indicating that this material is an 1144-type compound. The magnetic susceptibility and electrical resistivity indicate superconducting transitions at approximately 36 and 35K for EuRbFe4As4 and EuCsFe4As4, respectively. Moreover, an anomalous magnetic transition appears at approximately 15 K, suggesting the coexistence of superconductivity and a magnetic ordered state formed by the Eu2+ ions. The determined upper critical magnetic fields and coherence lengths are approximately 920 kOe and 1.8 nm for EuRbFe4As4 and 875 kOe and 1.9 nm for EuCsFe4As4, respectively.
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页数:5
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共 31 条
[1]   Superconductivity and magnetism in K-doped EuFe2As2 [J].
Anupam ;
Paulose, P. L. ;
Jeevan, H. S. ;
Geibel, C. ;
Hossain, Z. .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (26)
[2]   Bulk superconductivity at 2.6 K in undoped RbFe2As2 [J].
Bukowski, Z. ;
Weyeneth, S. ;
Puzniak, R. ;
Karpinski, J. ;
Batlogg, B. .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 :S328-S329
[3]   Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system [J].
Drozdov, A. P. ;
Eremets, M. I. ;
Troyan, I. A. ;
Ksenofontov, V. ;
Shylin, S. I. .
NATURE, 2015, 525 (7567) :73-+
[4]   Magnetic structure of EuFe2As2 as determined by resonant x-ray scattering [J].
Herrero-Martin, Javier ;
Scagnoli, Valerio ;
Mazzoli, Claudio ;
Su, Yixi ;
Mittal, Ranjan ;
Xiao, Yinguo ;
Brueckel, Thomas ;
Kumar, Neeraj ;
Dhar, S. K. ;
Thamizhavel, A. ;
Paolasini, Luigi .
PHYSICAL REVIEW B, 2009, 80 (13)
[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]   New-Structure-Type Fe-Based Superconductors: CaAFe4As4 (A = K, Rb, Cs) and SrAFe4As4 (A = Rb, Cs) [J].
Iyo, Akira ;
Kawashima, Kenji ;
Kinjo, Tatsuya ;
Nishio, Taichiro ;
Ishida, Shigeyuki ;
Fujihisa, Hiroshi ;
Gotoh, Yoshito ;
Kihou, Kunihiro ;
Eisaki, Hiroshi ;
Yoshida, Yoshiyuki .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (10) :3410-3415
[7]   Interplay of antiferromagnetism, ferromagnetism, and superconductivity in EuFe2(As1-xPx)2 single crystals [J].
Jeevan, H. S. ;
Kasinathan, Deepa ;
Rosner, Helge ;
Gegenwart, Philipp .
PHYSICAL REVIEW B, 2011, 83 (05)
[8]   Superconductivity and Magnetism in Eu1-xKxFe2As2 [J].
Jeevan, H. S. ;
Gegenwart, P. .
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200
[9]   CRYSTAL RADII AND EFFECTIVE IONIC-RADII OF THE RARE-EARTH IONS [J].
JIA, YQ .
JOURNAL OF SOLID STATE CHEMISTRY, 1991, 95 (01) :184-187
[10]   Weak Superconducting Fluctuations and Small Anisotropy of the Upper Critical Fields in an Fe1.05Te0.85Se0.15 Single Crystal [J].
Kida, Takanori ;
Kotani, Masahiro ;
Mizuguchi, Yoshikazu ;
Takano, Yoshihiko ;
Hagiwara, Masayuki .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2010, 79 (07)