R
Ren Zhi-An
Researcher at Chinese Academy of Sciences
Publications - 12
Citations - 1634
Ren Zhi-An is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Superconductivity & Angle-resolved photoemission spectroscopy. The author has an hindex of 8, co-authored 12 publications receiving 1592 citations.
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Journal ArticleDOI
Superconductivity at 55 K in Iron-Based F-Doped Layered Quaternary Compound Sm[O1-xFx] FeAs
Ren Zhi-An,Lu Wei,Yang Jie,Yi Wei,Shen Xiao-Li,Zheng-Cai,Che Guang-Can,Dong Xiao-Li,Sun Li-Ling,Zhou Fang,Zhao Zhong-Xian +10 more
TL;DR: In this article, the superconductivity of iron-based oxyarsenide Sm[O1-xFx]FeAs was reported, with the onset resistivity transition temperature at 55.0K and Meissner transition at 54.6 K. This compound has the same crystal structure as LaOFeAs with shrunk crystal lattices.
Journal ArticleDOI
Pseudogap and Superconducting Gap in Sm FeAs(O 1-x F x ) Superconductor from Photoemission Spectroscopy
Liu Hai-Yun,Jia Xiao-Wen,Zhang Wen-Tao,Zhao Lin,Meng Jian-Qiao,Liu Guo-Dong,Dong Xiao-Li,Wu Gang,Liu Rong-Hua,Chen Xian-Hui,Ren Zhi-An,Yi Wei,Che Guang-Can,Chen Gen-Fu,Wang Nan-Lin,Wang Guiling,Zhou Yong,Zhu Yong,Wang Xiaoyang,Zhao Zhong-Xian,XU Zu-Yan,Chen Chuang-Tian,Zhou Xing-Jiang +22 more
TL;DR: In this paper, high resolution photoemission measurements are carried out on non-superconducting SmOFeAs parent compound and superconducting smFeAs(O1-xFx) (x = 0.12, and 0.15) compounds.
Journal ArticleDOI
Strong Quantum Fluctuation of Vortices in Bulk Samples of the New Superconductor MgB2
Wen Hai-Hu,Li Shi-Liang,Zhao Zhi-Wen,NI Yong-Ming,Ren Zhi-An,Che Guang-Can,Yang Hai-Peng,Liu Zhi-Yong,Zhao Zhong-Xian +8 more
TL;DR: In this article, the upper critical field Hc2T and the irreversibility line Hirr(T) have been determined by using transport and magnetic measurements, and a large separation has been found showing the existence of a quantum vortex liquid state induced by quantum fluctuation of vortices in the new superconductor MgB2.
Journal ArticleDOI
Structural Properties of MgB 2 Superconductors with a Critical Current Density Greater than 10 5 A/cm 2
TL;DR: In this article, structural features of MgB2 superconductors prepared under different conditions have been analyzed by means of transmission electron microscopy, and it was identified to have a hexagonal structure with the space group of P6/mmm.
Journal ArticleDOI
Superconducting Properties of MgB 2 Prepared by High Pressure and Ambient Pressure
Ren Zhi-An,Che Guang-Can,Zhao Zhong-Xian,Chen Hong,Dong Cheng,NI Yong-Ming,Jia Shun-Lian,Wen Hai-Hu +7 more
TL;DR: In this article, the superconductor MgB2 has been prepared in two ways, by high pressure and ambient pressure synthesis, and the superconducting properties were measured and compared.