Synthesis and superconductivity of high-quality FeSe0.98 single crystals

被引：0

作者：

Wen, Zhiwei ^{[1
,2
]}

Jia, Tao ^{[1
,2
]}

Xiao, Yusen ^{[1
,2
]}

Li, Yong ^{[3
]}

Cui, Yajing ^{[2
]}

Li, Shulong ^{[4
]}

Zhao, Yong ^{[1
,4
,5
,6
]}

Chen, Yongliang ^{[1
,2
]}

机构：

[1] Southwest Jiaotong Univ, Key Lab Magnet Suspens Technol & Maglev Vehicle, Minist Educ, Chengdu 610031, Peoples R China

[2] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China

[3] Chengdu Normal Univ, Coll Sci & Engn, Chengdu 610031, Peoples R China

[4] Chengdu Univ, Inst Adv Study, Chengdu 610106, Peoples R China

[5] Fujian Prov Collaborat Innovat Ctr Adv High Field, Fuzhou 350117, Peoples R China

[6] Fujian Normal Univ, Coll Phys & Energy, Fuzhou 350117, Fujian, Peoples R China

来源：

SOLID STATE SCIENCES | 2025年 / 160卷

关键词：

FeSe; Electronic nematic order; Superconducting fluctuations; Upper critical field; FLUCTUATIONS; NEMATICITY; GROWTH;

D O I：

10.1016/j.solidstatesciences.2024.107801

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this paper, high quality tetragonal phase FeSe0.98 single crystals of 2 x 5 x 0.2 mm3 are synthesized using chemical vapor transport method with seed crystals. Magnetic measurements indicated that the obtained FeSe0.98 single crystals have a sharp superconducting transition at 9 K. The magnetic hysteresis loops are symmetric, without second peak effect. The critical current density is 2.4 x 104 A/cm2. The resistivity measurements revealed the presence of an electronic nematic order transition associated with the structural transition at 88 K. This transition is robust to magnetic fields. The limit temperature of superconducting fluctuation (T *) is determined to be around 2.15 times larger than T c , suggesting that the superconducting fluctuation of FeSe is a large one. The in-plane coherence length is 4.97 nm.

引用

页数：6

共 50 条

[1] THERMODYNAMIC FLUCTUATIONS IN THE SUPERCONDUCTOR Y1BA2CU3O9-Y - EVIDENCE FOR TWO-DIMENSIONAL SUPERCONDUCTIVITY [J].

AUSLOOS, M ;

LAURENT, C .

PHYSICAL REVIEW B, 1988, 37 (01) :611-614

[2] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].

BEAN, CP .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :31-+

[3] Lack of coupling between superconductivity and orthorhombic distortion in stoichiometric single-crystalline FeSe [J].

Boehmer, A. E. ;

Hardy, F. ;

Eilers, F. ;

Ernst, D. ;

Adelmann, P. ;

Schweiss, P. ;

Wolf, T. ;

Meingast, C. .

PHYSICAL REVIEW B, 2013, 87 (18)

[4] Variation of transition temperatures and residual resistivity ratio in vapor-grown FeSe [J].

Bohmer, A. E. ;

Taufour, V. ;

Straszheim, W. E. ;

Wolf, T. ;

Canfield, P. C. .

PHYSICAL REVIEW B, 2016, 94 (02)

[5] Superconducting and normal phases of FeSe single crystals at high pressure [J].

Braithwaite, D. ;

Salce, B. ;

Lapertot, G. ;

Bourdarot, F. ;

Marin, C. ;

Aoki, D. ;

Hanfland, M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (23)

[6] Single crystal growth and characterization of tetragonal FeSe1-x superconductors [J].

Chareev, Dmitriy ;

Osadchii, Evgeniy ;

Kuzmicheva, Tatiana ;

Lin, Jiunn-Yuan ;

Kuzmichev, Svetoslav ;

Volkova, Olga ;

Vasiliev, Alexander .

CRYSTENGCOMM, 2013, 15 (10) :1989-1993

[7] LINEAR AND NONLINEAR CONDUCTIVITY OF A SUPERCONDUCTOR NEAR TC [J].

DORSEY, AT .

PHYSICAL REVIEW B, 1991, 43 (10) :7575-7585

[8] IMPORTANCE OF PHASE FLUCTUATIONS IN SUPERCONDUCTORS WITH SMALL SUPERFLUID DENSITY [J].

EMERY, VJ ;

KIVELSON, SA .

NATURE, 1995, 374 (6521) :434-437

[9] What drives nematic order in iron-based superconductors? [J].

Fernandes, R. M. ;

Chubukov, A. V. ;

Schmalian, J. .

NATURE PHYSICS, 2014, 10 (02) :97-104

[10] Strain tuning of nematicity and superconductivity in single crystals of FeSe [J].

Ghini, Michele ;

Bristow, Matthew ;

Prentice, Joseph C. A. ;

Sutherland, Samuel ;

Sanna, Samuele ;

Haghighirad, A. A. ;

Coldea, A., I .

PHYSICAL REVIEW B, 2021, 103 (20)

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