PSEUDOGAP

作品数：28被引量：19H指数：3
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Preformed Cooper pairs in a triclinic iron pnictide superconductor
《Science China(Physics,Mechanics & Astronomy)》2025年第4期198-210,共13页Zezhong Li Wenshan Hong Honglin Zhou Xiaoyan Ma Uwe Stuhr Kaiyue Zeng Long Ma Ying Xiang Huan Yang Hai-Hu Wen Jiangping Hu Shiliang Li Huiqian Luo 
supported by the National Key Research and Development Program of China(Grant Nos.2023YFA1406100,2018YFA0704200;2020YFA0406000);the National Natural Science Foundation of China(Grant Nos.11822411,11874057,and 11961160699);the Strategic Priority Research Program(B)of the CAS(Grant Nos.XDB25000000;XDB33000000);the K.C.Wong Education Foundation(Grant No.GJTD-2020-01);the support from the Youth Innovation Promotion Association of CAS(Grant No.Y202001);the support from the Postdoctoral Innovative Talent program(Grant No.BX2021018);the China Postdoctoral Science Foundation(Grant No.2021M700250)。
Electron pairing along with phase coherence generates superconductivity below the critical temperature(T_(c)).In underdoped highT_ccuprates,these two quantum phenomena may occur at separate temperatures,which was late...
关键词：iron-based superconductors pnictides and chalcogenides nuclear magnetic resonance neutron inelastic scattering pseudogap regime 
Superconductivity and pseudogap features of an isolated FeAs layer in KCa_(2)Fe_(4)As_(4)F_(2) unraveled by STM/STS被引量：1
《Science China(Physics,Mechanics & Astronomy)》2023年第8期131-138,共8页Shuai Shao Fan Zhang Zongyuan Zhang Teng Wang Yanwei Wu Yubing Tu Jie Hou Xingyuan Hou Ning Hao Gang Mu Lei Shan 
supported by the National Key Research and Development Program of China(Grant Nos.2018YFA0305602,2022YFA1403203,and 2017YFA0303201);the National Natural Science Foundation of China(Grant Nos.12074002,92265104,12022413,11674331,and 12104004);the“Strategic Priority Research Program(B)”of the Chinese Academy of Sciences(Grant No.XDB33030100);the Major Basic Program of Natural Science Foundation of Shandong Province(Grant No.ZR2021ZD01);supported by the High Magnetic Field Laboratory of Anhui Province,China。
To reveal the intrinsic properties of the basic superconducting units,i.e.,the single layered FeSe/FeAs in iron-based superconductors or CuO_(2) planes in cuprate superconductors,is a necessary prerequisite for unders...
关键词：iron-based superconductor two-dimensional properties electronic correlation carrier doping scanning tunneling microscopy/spectroscopy 
NMR Evidence for Universal Pseudogap Behavior in Quasi-Two-Dimensional FeSe-Based Superconductors被引量：1
《Chinese Physics Letters》2022年第12期71-76,共6页B.L.Kang M.Z.Shi D.Zhao S.J.Li J.Li L.X.Zheng D.W.Song L.P.Nie T.Wu X.H.Chen 
supported by the National Natural Science Foundation of China(Grant Nos.11888101 and 12034004);the National Key R&D Program of China(Grant No.2017YFA0303000);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB25000000);the Anhui Initiative in Quantum Information Technologies(Grant No.AHY160000);the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302800)。
Recently,by intercalating organic ions into bulk FeSe superconductors,two kinds of layered FeSe-based superconductors[(TBA)xFeSe and(CTA)xFeSe]with superconducting transition temperatures(Tc)above 40 K have been disco...
关键词：NMR SUPERCONDUCTORS LAYERED 
Conservation of the particle–hole symmetry in the pseudogap state in optimally-doped Bi_(2)Sr_(2)CuO_(6+δ) superconductor
《Chinese Physics B》2022年第8期178-182,共5页Hongtao Yan Qiang Gao Chunyao Song Chaohui Yin Yiwen Chen Fengfeng Zhang Feng Yang Shenjin Zhang Qinjun Peng Guodong Liu Lin Zhao Zuyan Xu X.J.Zhou 
Project supported by the National Natural Science Foundation of China (Grant Nos. 11888101, 11922414 and 11974404);the National Key Research and Development Program of China (Grant Nos. 2021YFA1401800, 2017YFA0302900, 2018YFA0305602, and 2018YFA0704200);the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant Nos. XDB25000000 and XDB33000000);the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2021006);the Synergetic Extreme Condition User Facility (SECUF);the Research Program of Beijing Academy of Quantum Information Sciences (Grant No. Y18G06)。
The pseudogap state is one of the most enigmatic characteristics in the anomalous normal state properties of the high temperature cuprate superconductors. A central issue is to reveal whether there is a symmetry break...
关键词：PSEUDOGAP symmetry breaking ARPES 
Experimental observation of pseudogap in a modulation-doped Mott insulator:Sn/Si(111)-(√3×√3)R30°
《Chinese Physics B》2022年第6期115-119,共5页Yan-Ling Xiong Jia-Qi Guan Rui-Feng Wang Can-Li Song Xu-Cun Ma Qi-Kun Xue 
by the National Natural Science Foundation of China(Grant Nos.62074092 and 11604366);the National Key R&D Program of China(Grant No.2018YFA0305603)。
Unusual quantum phenomena usually emerge upon doping Mott insulators.Using a molecular beam epitaxy system integrated with cryogenic sc√annin√g tunneling microscope,we investigate the electronic structure of a modul...
关键词：pseudogap(PG) modulation doping Mott insulator scanning tunneling microscope(STM) 
Ultrafast optical spectroscopy evidence of pseudogap and electronphonon coupling in an iron-based superconductor KCa_(2)Fe_(4)As_(4)F_(2)被引量：7
《Science China(Physics,Mechanics & Astronomy)》2022年第3期92-98,共7页Chen Zhang Qi-Yi Wu Wen-Shan Hong Hao Liu Shuang-Xing Zhu Jiao-Jiao Song Yin-Zou Zhao Fan-Ying Wu Zi-Teng Liu Shu-Yu Liu Ya-Hua Yuan Han Huang Jun He Shiliang Li Hai-Yun Liu Yu-Xia Duan Hui-Qian Luo Jian-Qiao Meng 
supported by the National Natural Science Foundation of China(Grant Nos.51502351,12074436,U2032204,11822411,11961160699,and 11874401);the National Key Research and Development Program of China(Grant Nos.2018YFA0704200,2017YFA0303100;2017YFA0302900);the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(CAS)(Grant Nos.XDB25000000;XDB07020300);the K.C.Wong Education Foundation(Grant No.GJTD-2020-01);support from the Innovation-driven Plan in Central South University(Grant No.2016CXS032);the support from the Youth Innovation Promotion Association of CAS(Grant No.Y202001);the Beijing Natural Science Foundation(Grant No.JQ19002)。
We use ultrafast optical spectroscopy to study the nonequilibrium quasiparticle relaxation dynamics of the iron-based superconductor KCa_(2)Fe_(4)A_(s4)F_(2)with T_(c)= 33.5 K. Our results reveal a possible pseudogap(...
关键词：KCa_(2)Fe_(4)A_(s4)F_(2) ultrafast spectroscopy electron-phonon coupling SUPERCONDUCTIVITY 
A short review of the recent progresses in the study of the cuprate superconductivity
《Chinese Physics B》2021年第10期14-17,共4页Tao Li 
supported by the National Natural Science Foundation of China(Grant No.11674391);the National Basic Research and Development Project of China(Grant No.2016YFA0300504).
The last 15 years have witnessed important progresses in our understanding of the mechanism of superconductivity in the high-Tc cuprates.There is now strong evidence that the strange metal behavior is induced by the q...
关键词：high-Tc superconductivity pseudogap phenomena strange metal behavior 
Microscopic evidence for the intra-unit-cell electronic nematicity inside the pseudogap phase in YBa_(2)Cu_(4)O_(8)被引量：3
《Science China(Physics,Mechanics & Astronomy)》2021年第3期99-104,共6页Wen Wang Jun Luo ChunGuang Wang Jie Yang Yasuharu Kodama Rui Zhou Guo-Qing Zheng 
supported by the National Natural Science Foundation of China (Grant Nos. 11974405, 11674377, and 11634015);the Ministry of Science and Technology of China (Grant Nos. 2016YFA0300502, and 2017YFA0302904);the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB33010100)。
Understanding the nature of the mysterious pseudogap phenomenon is one of the most important issues associated with cuprate high-T_(c) superconductors.Here,we report 17O nuclear magnetic resonance(NMR) studies on two ...
关键词：high-temperature superconductors nuclear magnetic resonance nematic order PSEUDOGAP 
Observation of pseudogap in SnSe2 atomic layers grown on graphite被引量：2
《Frontiers of physics》2020年第4期113-120,共8页Ya-Hui Mao Huan Shan Jin-Rong Wu Ze-Jun Li Chang-Zheng Wu Xiao-Fang Zhai Ai-Di Zhao Bing Wang 
We thank Prof.Tao Wu for helpful discus.sion.This work was supported by the National Key R&D Program of China(Grant Nos.2016YFA0200603 and 2017YFA0205004);the"Strategic Priority Research Program"of CAS(Grant No.XDB01020100);the National Natural Science Foundation of China(Grant Nos.91321309,21421063,and 21473174);the Funda-mental Research Funds for the Central Science Advances Universi-ties(Nos.WK2060190027 and WK2060190084);A.Z.acknowledges a fellowship from the Youth Innovation Promotion Association of CAS(No.2011322)。
Superconducting metal dichalcogenides(MDCs)present several similarities to the other layered SI1-perconductors like cuprates.The superconductivity in atomically thin MDCs has been demonstrated by recent experiments,ho...
关键词：scanning tunneling microscopy PSEUDOGAP metal dichalcogenides SnSe2 van der Waals epitaxy 
Time-Resolved Study of Pseudogap and Superconducting Quasiparticle Dynamics in Ca0.82La0.18Fe1-xNixAs2被引量：1
《Chinese Physics Letters》2020年第6期86-89,共4页Cong-Ying Jiang Hai-Ying Song T.Xie C.Liu H.Q.Luo S.Z.Zhao Xiu Zhang X.C.Nie Jian-Qiao Meng Yu-Xia Duan H.Y.Liu Shi-Bing Liu 
Supported by the National Natural Science Foundation of China(Grant Nos.51875009 and 51705006);the Key Project of Beijing Municipal Natural Science Foundation and Beijing Education Committee’s Science and Technology Plan(Grant Nos.KZ201710005004 and KZ201810005001)。
We use femtosecond time-resolved optical reflectivity to study the photoexcited quasiparticle(QP)dynamics in the iron-based 112 type superconducting(SC)samples Ca0.82La0.18Fe1-xNixAs2,with x=0 and 0.024.In the parent ...
关键词：transition. RELAXATION EXCITED 
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