Zhiwei Wen , Tao Jia , Yusen Xiao , Yong Li , Yajing Cui , Shulong Li , Yong Zhao , Yongliang Chen
{"title":"高质量FeSe0.98单晶的合成及其超导性","authors":"Zhiwei Wen , Tao Jia , Yusen Xiao , Yong Li , Yajing Cui , Shulong Li , Yong Zhao , Yongliang Chen","doi":"10.1016/j.solidstatesciences.2024.107801","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, high quality tetragonal phase FeSe<sub>0.98</sub> single crystals of 2 × 5 × 0.2 mm<sup>3</sup> are synthesized using chemical vapor transport method with seed crystals. Magnetic measurements indicated that the obtained FeSe<sub>0.98</sub> 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 × 10<sup>4</sup> A/cm<sup>2</sup>. 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 (<em>T</em> ∗) is determined to be around 2.15 times larger than <em>T</em><sub>c</sub>, suggesting that the superconducting fluctuation of FeSe is a large one. The in-plane coherence length is 4.97 nm.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107801"},"PeriodicalIF":3.3000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and superconductivity of high-quality FeSe0.98 single crystals\",\"authors\":\"Zhiwei Wen , Tao Jia , Yusen Xiao , Yong Li , Yajing Cui , Shulong Li , Yong Zhao , Yongliang Chen\",\"doi\":\"10.1016/j.solidstatesciences.2024.107801\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this paper, high quality tetragonal phase FeSe<sub>0.98</sub> single crystals of 2 × 5 × 0.2 mm<sup>3</sup> are synthesized using chemical vapor transport method with seed crystals. Magnetic measurements indicated that the obtained FeSe<sub>0.98</sub> 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 × 10<sup>4</sup> A/cm<sup>2</sup>. 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 (<em>T</em> ∗) is determined to be around 2.15 times larger than <em>T</em><sub>c</sub>, suggesting that the superconducting fluctuation of FeSe is a large one. The in-plane coherence length is 4.97 nm.</div></div>\",\"PeriodicalId\":432,\"journal\":{\"name\":\"Solid State Sciences\",\"volume\":\"160 \",\"pages\":\"Article 107801\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solid State Sciences\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1293255824003662\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/12/6 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Sciences","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1293255824003662","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/12/6 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Synthesis and superconductivity of high-quality FeSe0.98 single crystals
In this paper, high quality tetragonal phase FeSe0.98 single crystals of 2 × 5 × 0.2 mm3 are synthesized using chemical vapor transport method with seed crystals. Magnetic measurements indicated that the obtained 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 × 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 Tc, suggesting that the superconducting fluctuation of FeSe is a large one. The in-plane coherence length is 4.97 nm.
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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.
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