1High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031 2University of Science and Technology of China, Hefei 230031 3Hefei Science Center, Chinese Academy of Sciences, Hefei 230031 4Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093
Abstract:The electronic doping effect on both the superconductivity and the nematic order in the FeSe nanoflake are investigated by using the electric-double-layer transistor configuration. The superconductivity can be effectively controlled by electronic doping, and the onset superconducting transition temperature $T_{\rm c}$ reaches as high as 45 K at a gate voltage of $V_{\rm g}=4$ V. Meanwhile, the nematic phase is gradually suppressed with the increase of electronic doping (or $V_{\rm g}$). The results provide an effective method with variable charge doping for investigation of the rich physics in the FeSe superconductor.
. [J]. 中国物理快报, 2016, 33(05): 57401-057401.
Wei-Ke Wang, Yan Liu, Ji-Yong Yang, Hai-Feng Du, Wei Ning, Lang-Sheng Ling, Wei Tong, Zhe Qu, Zhao-Rong Yang, Ming-Liang Tian, Yu-Heng Zhang. The 45K Onset Superconductivity and the Suppression of the Nematic Order in FeSe by Electrolyte Gating. Chin. Phys. Lett., 2016, 33(05): 57401-057401.
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
Lucas M B, 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 2012 Nat. Mater.12 15
[11]
Sedlmaier S J, Cassidy S J, Morris R G, Drakopoulos M, Reinhard C, Moorhouse S J, Hare D O, Manuel P, Khalyavin D and Clarke S J 2014 J. Am. Chem. Soc.136 630
Noji T, Hatakeda T, Hosono S, Kawamata T, Kato M and Koike Y 2014 Physica C 504 8
[14]
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 2014 Nat. Mater.14 325
[15]
Ge J F, Liu Z L, Liu C H, Gao C L, Qian D, Xue Q K, Liu Y and Jia J F 2014 Nat. Mater.14 285
[16]
Liu D, Zhang W H, Mou D X, He J F, Ou Y B, Wang Q Y, Li Z, Wang L L, Zhao L, He S L, Peng Y Y, Liu X, Chen C Y, Yu L, Liu G D, Dong X L, Zhang J, Chen C T, Xu Z Y, Hu J P, Chen X, Ma X C, Xue Q K and Zhou X J 2012 Nat. Commun.3 931
[17]
Zhang W H, Li Z, Li F S, Zhang H M, Peng J Q, Tang C J, Wang Q Y, He K, Chen X, Wang L L, Ma X C and Xue Q K 2014 Phys. Rev. B 89 060506(R)
Niu X H, Peng R, Xu H C, Yan Y J, Jiang J, Xu D F, Yu T L, Song Q, Huang Z C, Wang Y X, Xie B P, Lu X F, Wang N Z, Chen X H, Sun Z and Feng D L 2015 Phys. Rev. B 92 060504(R)
[21]
Zhao L, Liang A J, Yuan D, Hu Y, Liu D, Huang J, He S, Shen B, Xu Y, Liu X, Yu L, Liu G, Zhou H, Huang Y, Dong X, Zhou F, Liu K, Lu Z, Zhao Z, Chen C, Xu Z and Zhou X J 2016 Nat. Commun.7 10608
Maletz J, Zabolotnyy V B, Evtushinsky D V, Thirupathaiah S, Wolter A U B, Harnagea L, Yaresko A N, Vasiliev A N, Chareev D A, B?hmer A E, Hardy F, Wolf T, Meingast C, Rienks E D L, Büchner B and Borisenko S V 2014 Phys. Rev. B 89 220506(R)
[24]
Shimojima T, Suzuki Y, Sonobe T, Nakamura A, Sakano M, Omachi J, Yoshioka K, Kuwata-Gonokami M, Ono K, Kumigashira H, B?hmer A E, Hardy F, Wolf T, Meingast C, L?hneysen H V, Ikeda H and Ishizaka K 2014 Phys. Rev. B 90 121111(R)
B?hmer A E, Arai T, Hardy F, Hattori T, Iye T, Wolf T, L?hneysen H V, Ishida K and Meingast C 2015 Phys. Rev. Lett.114 027001
[33]
Moore S A, Curtis J L, Di Giorgio C, Lechner E, Abdel-Hafiez M, Volkova O S, Vasiliev A N, Chareev D A, Karapetrov G and Iavarone M 2015 Phys. Rev. B 92 235113
[34]
McQueen T M, Huang Q, Ksenofontov V, Felser C, Xu Q, Zandbergen H, Hor Y S, Allred J, Williams A J, Qu D, Checkelsky J, Ong N P and Cava R J 2009 Phys. Rev. B 79 014522