Superconductivity in Quasi-One-Dimensional K2Cr3As3 with Significant Electron Correlations

被引：249

作者：

Bao, Jin-Ke ^{[1
]}

Liu, Ji-Yong ^{[2
]}

Ma, Cong-Wei ^{[1
]}

Meng, Zhi-Hao ^{[1
]}

Tang, Zhang-Tu ^{[1
]}

Sun, Yun-Lei ^{[1
]}

Zhai, Hui-Fei ^{[1
]}

Jiang, Hao ^{[1
]}

Bai, Hua ^{[1
]}

Feng, Chun-Mu ^{[1
]}

Xu, Zhu-An ^{[1
,3
,4
]}

Cao, Guang-Han ^{[1
,3
,4
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[4] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW X | 2015年 / 5卷 / 01期

关键词：

CRITICAL-FIELD; TEMPERATURE;

D O I：

10.1103/PhysRevX.5.011013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the discovery of bulk superconductivity (SC) at 6.1 K in a quasi-one-dimensional chromium pnictide K2Cr3As3 that contains [Cr3As3)(2-)](infinity) double-walled subnanotubes with face-sharing Cr-6/2 ( As-6/2) octahedron linear chains in the inner (outer) wall. The material has a large electronic specific-heat coefficient of 70-75 mJ K-2 mol(-1), indicating significantly strong electron correlations. A linear temperature dependence of resistivity in a broad temperature range from 7 to 300 K is observed, which suggests non-Fermi liquid behavior of the material. Unconventional SC is preliminarily manifested by the estimated upper critical field exceeding the Pauli limit by a factor of 3-4. The title compound represents a rare example that possibly unconventional SC emerges in a quasi-1D system with strong electron correlations.

引用

页数：6

共 25 条

[1] NEW PSEUDO-ONE-DIMENSIONAL SUPERCONDUCTOR - TL2MO6SE6 [J].

ARMICI, JC ;

DECROUX, M ;

FISCHER, O ;

POTEL, M ;

CHEVREL, R ;

SERGENT, M .

SOLID STATE COMMUNICATIONS, 1980, 33 (06) :607-611

[2] 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

[3] A NOTE ON THE MAXIMUM CRITICAL FIELD OF HIGH-FIELD SUPERCONDUCTORS [J].

CHANDRASEKHAR, BS .

APPLIED PHYSICS LETTERS, 1962, 1 (01) :7-8

[4] In-Plane Resistivity Anisotropy in an Underdoped Iron Arsenide Superconductor [J].

Chu, Jiun-Haw ;

Analytis, James G. ;

De Greve, Kristiaan ;

McMahon, Peter L. ;

Islam, Zahirul ;

Yamamoto, Yoshihisa ;

Fisher, Ian R. .

SCIENCE, 2010, 329 (5993) :824-826

[5] UPPER LIMIT FOR CRITICAL FIELD IN HARD SUPERCONDUCTORS [J].

CLOGSTON, AM .

PHYSICAL REVIEW LETTERS, 1962, 9 (06) :266-&

[6] Surprises on the way from one- to two-dimensional quantum magnets: The ladder materials [J].

Dagotto, E ;

Rice, TM .

SCIENCE, 1996, 271 (5249) :618-623

[7] QUASI TWO-DIMENSIONAL ELECTRONIC-PROPERTIES OF THE LITHIUM MOLYBDENUM BRONZE, LI0.9MO6O17 [J].

GREENBLATT, M ;

MCCARROLL, WH ;

NEIFELD, R ;

CROFT, M ;

WASZCZAK, JV .

SOLID STATE COMMUNICATIONS, 1984, 51 (09) :671-674

[8] SUPERCONDUCTIVITY IN A SYNTHETIC ORGANIC CONDUCTOR (TMTSF)2PF6 [J].

JEROME, D ;

MAZAUD, A ;

RIBAULT, M ;

BECHGAARD, K .

JOURNAL DE PHYSIQUE LETTRES, 1980, 41 (04) :L95-L98

[9] Superconductivity up to 30 K in the vicinity of the quantum critical point in BaFe2(As1-xPx)2 [J].

Jiang, Shuai ;

Xing, Hui ;

Xuan, Guofang ;

Wang, Cao ;

Ren, Zhi ;

Feng, Chunmu ;

Dai, Jianhui ;

Xu, Zhu'an ;

Cao, Guanghan .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (38)

[10] 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-+

← 1 2 3 →