| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Superconductivity at 44.4 K achieved by intercalating EMIM+ into FeSe |
| Jinhua Wang(王晋花), Qing Li(李庆), Wei Xie(谢威), Guanyu Chen(陈冠宇), Xiyu Zhu(祝熙宇)†, and Hai-Hu Wen(闻海虎) |
| Center for Superconducting Physics and Materials, National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China |
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Abstract Superconductivity with transition temperature Tc above 40 K was observed in protonated FeSe (Hy-FeSe) previously with the ionic liquid EMIM-BF4 used in the electrochemical process. However, the real superconducting phase is not clear until now. And detailed structural, magnetization, and electrical transport measurements are lacking. By using similar protonating technique on FeSe single crystals, we obtain superconducting samples with Tc above 40 K. We show that the obtained superconducting phase is not Hy-FeSe but actually an organic-ion (C6H11N2+ referred to as EMIM+)-intercalated phase (EMIM)xFeSe. By using x-ray diffraction technique, two sets of index peaks corresponding to different c-axis lattice constants are detected in the obtained samples, which belong to the newly formed phase of intercalated (EMIM)xFeSe and the residual FeSe, respectively. The superconductivity of (EMIM)xFeSe with Tc of 44.4 K is confirmed by resistivity and magnetic susceptibility measurements. Temperature dependence of resistivity with different applied magnetic fields reveals that the upper critical field Hc2 is quite high, while the irreversibility field Hirr is suppressed quickly with increasing temperature till about 20 K. This indicates that the resultant compound has a high anisotropy with a large spacing between the FeSe layers.
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Received: 12 July 2021
Revised: 11 August 2021
Accepted manuscript online: 19 August 2021
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PACS:
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74.70.Xa
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(Pnictides and chalcogenides)
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74.25.-q
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(Properties of superconductors)
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74.72.Ek
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(Electron-doped)
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82.45.Aa
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(Electrochemical synthesis)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12061131001 and 52072170) and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB25000000). |
Corresponding Authors:
Xiyu Zhu
E-mail: zhuxiyu@nju.edu.cn;hhwen@nju.edu.cn
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Cite this article:
Jinhua Wang(王晋花), Qing Li(李庆), Wei Xie(谢威), Guanyu Chen(陈冠宇), Xiyu Zhu(祝熙宇), and Hai-Hu Wen(闻海虎) Superconductivity at 44.4 K achieved by intercalating EMIM+ into FeSe 2021 Chin. Phys. B 30 107402
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[1] Kamihara Y, Watanabe T, Hirano M and Hosono H 2008 J. Am. Chem. Soc. 130 3296
[2] Hsu F C, Luo J Y, Yeh K W, Chen T K, Huang T W, Wu P M, Lee Y C, Huang Y L, Chu Y Y, Yan D C and Wu M K 2008 Proc. Natl. Acad. Sci. USA 105 14262
[3] Medvedev S, McQueen T M, Troyan I A, Palasyuk T, Eremets M I, Cava R J, Naghavi S, Casper F, Ksenofontov V, Wortmann G and Felser C 2009 Nat. Mater. 8 630
[4] Sun J P, Matsuura K, Ye G Z, Mizukami Y, Shimozawa M, Matsubayashi K, Yamashita M, Watashige T, Kasahara S, Matsuda Y, Yan J Q, Sales B C, Uwatoko Y, Cheng J G and Shibauchi T 2016 Nat. Commun. 7 12146
[5] Guo J G, Jin S F, Wang G, Wang S C, Zhu K X, Zhou T T, He M and Chen X L 2010 Phys. Rev. B 82 180520
[6] Krzton-Maziopa A, Shermadini Z, Pomjakushina E, Pomjakushin V, Bendele M, Amato A, Khasanov R, Luetkens H and Conder K 2011 J. Phys.: Condens. Matter 23 052203
[7] Ying J J, Wang X F, Luo X G, Wang A F, Zhang M, Yan Y J, Xiang Z J, Liu R H, Cheng P, Ye G J and Chen X H 2011 Phys. Rev. B 83 212502
[8] Wang A F, Ying J J, Yan Y J, Liu R H, Luo X G, Li Z Y, Wang X F, Zhang M, Ye G J, Cheng P, Xiang Z J and Chen X H 2011 Phys. Rev. B 83 060512
[9] Fang M H, Wang H D, Dong C H, Li Z J, Feng C M, Chen J and Yuan H Q 2011 EPL 94 27009
[10] Ye F, Chi S, Bao W, Wang X F, Ying J J, Chen X H, Wang H D, Dong C H and Fang M H 2011 Phys. Rev. Lett. 107 137003
[11] Wang Z, Song Y J, Shi H L, Wang Z W, Chen Z, Tian H F, Chen G F, Guo J G, Yang H X and Li J Q 2011 Phys. Rev. B 83 140505
[12] Ding X X, Fang D L, Wang Z Y, Yang H, Liu J Z, Deng Q, Ma G B, Meng C, Hu Y H and Wen H H 2013 Nat. Commun. 4 1897
[13] Li W, Ding H, Deng P, Chang K, Song C L, He K, Wang L L, Ma X C, Hu J P, Chen X and Xue Q K 2012 Nat. Phys. 8 126
[14] Ying T P, Chen X L, Wang G, Jin S F, Zhou T T, Lai X F, Zhang H and Wang W Y 2012 Sci. Rep. 2 426
[15] Scheidt E W, Hathwar V R, Schmitz D, Dunbar A, Scherer W, Mayr F, Tsurkan V, Deisenhofer J and Loidl A 2012 Eur. Phys. J. B 85 279
[16] Burrard-Lucas M, Free D G, Sedlmaier S J, Wright J D, Cassidy S J, Hara Y, Corkett A J, Lancaster T, Baker P J, Blundell S J and Clarke S J 2013 Nat. Mater. 12 15
[17] Ying T P, Chen X L, Wang G, Jin S F, Lai X F, Zhou T T, Zhang H, Shen S J and Wang W Y 2013 J. Am. Chem. Soc. 135 2951
[18] Lu X F, Wang N Z, Zhang G H, Luo X G, Ma Z M, Lei B, Huang F Q and Chen X H 2014 Phys. Rev. B 89 020507
[19] Lu X F, Wang N Z, Wu H, Wu Y P, Zhao D, Zeng X Z, Luo X G, Wu T, Bao W, Zhang G H, Huang F Q, Huang Q Z and Chen X H 2015 Nat. Mater. 14 325
[20] Dong X L, Jin K, Yuan D N, Zhou H X, Yuan J, Huang Y L, Hua W, Sun J L, Zheng P, Hu W, Mao Y Y, Ma M W, Zhang G M, Zhou F and Zhao Z X 2015 Phys. Rev. B 92 064515
[21] Krzton-Maziopa A, Pomjakushina E V, Pomjakushin V Y, Rohr F V, Schilling A and Conder K 2012 J. Phys. Condens. Matter 24 382202
[22] Hosono S, Noji T, Hatakeda T, Kawamata T, Kato M and Koike Y 2014 J. Phys. Soc. Jpn. 83 113704
[23] Noji T, Hatakeda T, Hosono S, Kawamata T, Kato M and Koike Y 2014 Physica C 504 8
[24] Hayashi F, Lei H, Guo J G and Hosono H 2015 Inorg. Chem. 54 3346
[25] Hatakeda T, Noji T, Sato K, Kawamata T, Kato M and Koike Y 2016 J. Phys. Soc. Jpn. 85 103702
[26] Miao X, Terao T, Yang X F, Nishiyama S, Miyazaki T, Goto H, Iwasa Y and Kubozono Y 2017 Phys. Rev. B 96 014502
[27] Jin S F, Fan X, Wu X Z, Sun R J, Wu H, Huang Q Z, Shi C L, Xi X K, Li Z L and Chen X L 2017 Chem. Comm. 53 9729
[28] Sakamoto C, Noji T, Sato K, Kawamata T and Kato M 2020 J. Phys. Soc. Jpn. 89 115002
[29] Gao Z, Zeng S Y, Zhu B C, Li B, Hao Q Y, Hu Y W, Wang D K and Tang K B 2018 Sci. China Mater. 61 977
[30] Shi M Z, Wang N Z, Lei B, Shang C, Meng F B, Ma L K, Zhang F X, Kuang D Z and Chen X H 2018 Phys. Rev. Mater. 2 074801
[31] Shi M Z, Wang N Z, Lei B, Ying J J, Zhu C S, Sun Z L, Cui J H, Meng F B, Shang C, Ma L K ang Chen X H 2018 New J. Phys. 20 123007
[32] Cui Y, Hu Z, Zhang J S, Ma W L, Ma M W, Ma Z, Wang C, Yan J Q, Sun J P, Cheng J G, Jia S, Li Y, Wen J S, Lei H C, Yu P, Ji W and Yu W Q 2019 Chin. Phys. Lett. 36 077401
[33] Böhmer A E, Hardy F, Eilers F, Ernst D, Adelmann P, Schweiss P, Wolf T and Meingast C 2013 Phys. Rev. B 87 180505
[34] Chen G Y, Wang E Y, Zhu X Y and Wen H H 2019 Phys. Rev. B 99 054517
[35] Lin H, Xing J, Zhu X Y, Yang H and Wen H H 2016 Sci. China-Phys. Mech. Astron. 59 657404
[36] Werthamer R, Helfand E and Hohenberg P C 1966 Phys. Rev. 147 295
[37] Yang H, Chen G Y, Zhu X Y, Xing J and Wen H H 2017 Phys. Rev. B 96 064501
[38] Houghton A, Pelcovits R A and Sudbo A 1989 Phys. Rev. B 40 6763
[39] Lindermann F 1910 Phys. Z 11 609
[40] Wang C L, Yi X L, Qiu Y, Tang Q B, Zhang X W, Luo Y S and Yu B H 2016 Supercond. Sci. Technol. 29 055003 |
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