X
Xi Chen
Researcher at City University of Hong Kong
Publications - 103
Citations - 5362
Xi Chen is an academic researcher from City University of Hong Kong. The author has contributed to research in topics: Medicine & Internal medicine. The author has an hindex of 25, co-authored 88 publications receiving 4414 citations. Previous affiliations of Xi Chen include Hong Kong University of Science and Technology & Hong Kong Polytechnic University.
Papers
More filters
Journal ArticleDOI
Discovery of robust in-plane ferroelectricity in atomic-thick SnTe
Kai Chang,Junwei Liu,Junwei Liu,Haicheng Lin,Na Wang,Kun Zhao,Anmin Zhang,Feng Jin,Yong Zhong,X. J. Hu,Wenhui Duan,Qingming Zhang,Liang Fu,Qi-Kun Xue,Xi Chen,Shuai-Hua Ji,Shuai-Hua Ji +16 more
TL;DR: The discovery of the stable in-plane spontaneous polarization in atomic-thick tin telluride (SnTe), down to a 1–unit cell (UC) limit is reported, which may enable the miniaturization of ferroelectric devices.
Journal ArticleDOI
Experimental Demonstration of Topological Surface States Protected by Time-Reversal Symmetry
Tong Zhang,Tong Zhang,Peng Cheng,Xi Chen,Jin-Feng Jia,Xucun Ma,Ke He,Lili Wang,Haijun Zhang,Xi Dai,Zhong Fang,Xincheng Xie,Qi-Kun Xue,Qi-Kun Xue +13 more
TL;DR: By studying the voltage-dependent standing wave patterns, the energy dispersion E(k) is determined, which confirms the Dirac cone structure of the topological states, and shows that, very different from the conventional surface states, backscattering of theTopological states by nonmagnetic impurities is completely suppressed.
Journal ArticleDOI
Superconductivity in one-atomic-layer metal films grown on Si(111)
Tong Zhang,Peng Cheng,Wen Juan Li,Yu-Jie Sun,Guang Wang,Xie-Gang Zhu,Ke He,Lili Wang,Xucun Ma,Xi Chen,Yayu Wang,Ying Liu,Hai Qing Lin,Jin-Feng Jia,Qi-Kun Xue +14 more
TL;DR: The epitaxial films of lead and indium represent the thinnest superconductors possible as discussed by the authors, and have been shown to have superconductivity on silicon substrates.
Journal ArticleDOI
Landau Quantization of Topological Surface States in Bi2Se3
Peng Cheng,Can-Li Song,Tong Zhang,Tong Zhang,Yanyi Zhang,Yilin Wang,Jin-Feng Jia,Jing Wang,Yayu Wang,Bang-Fen Zhu,Xi Chen,Xucun Ma,Ke He,Lili Wang,Xi Dai,Zhong Fang,Xincheng Xie,Xiao-Liang Qi,Xiao-Liang Qi,Chao-Xing Liu,Chao-Xing Liu,Shou-Cheng Zhang,Qi-Kun Xue,Qi-Kun Xue +23 more
TL;DR: The zeroth Landau level is discovered, predicted to give rise to the half-quantized Hall effect for the topological surface states, which may eventually lead to the realization of quantum Hall effect in topological insulators.
Journal ArticleDOI
Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor
Can-Li Song,Can-Li Song,Yilin Wang,Peng Cheng,Yeping Jiang,Yeping Jiang,Wei Li,Tong Zhang,Tong Zhang,Zhi Li,Ke He,Lili Wang,Jin-Feng Jia,Hsiang-Hsuan Hung,Congjun Wu,Xucun Ma,Xi Chen,Qi-Kun Xue,Qi-Kun Xue +18 more
TL;DR: The electron-pairing mechanism in an iron-based superconductor, iron selenide (FeSe), is investigated using scanning tunneling microscopy and spectroscopy and the anisotropy can be explained in terms of the orbital-dependent reconstruction of electronic structure in FeSe.