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

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-02-01 DOI:10.1016/j.solidstatesciences.2024.107801

Zhiwei Wen , Tao Jia , Yusen Xiao , Yong Li , Yajing Cui , Shulong Li , Yong Zhao , Yongliang Chen

引用次数: 0

Abstract

In this paper, high quality tetragonal phase FeSe_0.98 single crystals of 2 × 5 × 0.2 mm³ are synthesized using chemical vapor transport method with seed crystals. Magnetic measurements indicated that the obtained FeSe_0.98 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 × 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.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.