K
Ke He
Researcher at Tsinghua University
Publications - 269
Citations - 20823
Ke He is an academic researcher from Tsinghua University. The author has contributed to research in topics: Topological insulator & Thin film. The author has an hindex of 61, co-authored 253 publications receiving 17069 citations. Previous affiliations of Ke He include University of Science and Technology of China & Chinese Academy of Sciences.
Papers
More filters
Journal ArticleDOI
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
Cui-Zu Chang,Cui-Zu Chang,Jinsong Zhang,Xiao Feng,Xiao Feng,Jie Shen,Zuocheng Zhang,Minghua Guo,Kang Li,Yunbo Ou,Pang Wei,Lili Wang,Zhong Qing Ji,Yang Feng,Shuai-Hua Ji,Xi Chen,Jin-Feng Jia,Xi Dai,Zhong Fang,Shou-Cheng Zhang,Ke He,Yayu Wang,Li Lu,Xucun Ma,Qi-Kun Xue +24 more
TL;DR: The observation of the quantum anomalous Hall (QAH) effect in thin films of chromium-doped (Bi,Sb)2Te3, a magnetic topological insulator shows a plateau in the Hall resistance as a function of the gating voltage without any applied magnetic fields, signifying the achievement of the QAH state.
Journal ArticleDOI
Crossover of the three-dimensional topological insulator Bi 2 Se 3 to the two-dimensional limit
Yi Zhang,Ke He,Cui-Zu Chang,Cui-Zu Chang,Can-Li Song,Lili Wang,Xi Chen,Jin-Feng Jia,Zhong Fang,Xi Dai,Wen-Yu Shan,Shun-Qing Shen,Qian Niu,Xiao-Liang Qi,Shou-Cheng Zhang,Xucun Ma,Qi-Kun Xue +16 more
TL;DR: In this article, a study of the topological insulating Bi2Se3 thin films finds that a gap in these gapless surface states opens up in films below a certain thickness, which suggests that in thicker films, gapless states exist on both upper and lower surfaces.
Journal ArticleDOI
Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO3
Qingyan Wang,Qingyan Wang,Zhi Li,Wenhao Zhang,Zuocheng Zhang,Jinsong Zhang,Wei Li,Hao Ding,Yunbo Ou,Peng Deng,Kai Chang,Jing Wen,Can-Li Song,Ke He,Jin-Feng Jia,Shuai-Hua Ji,Yayu Wang,Lili Wang,Xi Chen,Xucun Ma,Qi-Kun Xue +20 more
TL;DR: In this paper, the authors reported high transition temperature superconductivity in one unitcell (UC) thick FeSe films grown on a Se-etched SrTiO3 (001) substrate by molecular beam epitaxy (MBE).
Journal ArticleDOI
Intrinsic magnetic topological insulators in van der Waals layered MnBi$_2$Te$_4$-family materials
Jiaheng Li,Yang Li,Shiqiao Du,Zun Wang,Bing-Lin Gu,Shou-Cheng Zhang,Ke He,Wenhui Duan,Yong Xu +8 more
TL;DR: In this paper, the authors predict that van der Waals layered MnBi$_2$Te$_4$-family materials show two-dimensional (2D) ferromagnetism in the single layer and three-dimensional(3D) $A$-type antiferromagnetic topological insulator in the bulk.
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.