本文由三篇译文组成,分别为张首晟的《高温超导:对称与反射》(High TcSuperconductivity:Symmetries and Reflections,译自Symmetry & Modern Physics:C.N.Yang Retirement Symposium,18-23)、乔玲丽的《杨氏金字塔里遗忘的珠宝》(A...本文由三篇译文组成,分别为张首晟的《高温超导:对称与反射》(High TcSuperconductivity:Symmetries and Reflections,译自Symmetry & Modern Physics:C.N.Yang Retirement Symposium,18-23)、乔玲丽的《杨氏金字塔里遗忘的珠宝》(A Forgotten Treasure of Yang’s Pyramid,译自Proceedings of Conference in Honor of C.N.Yang’s 85th Birthday,pp.469-476),和赵午的《杨振宁和我在石溪读书的日子》(Chen-Ning Yang and My Student Days at Stony Brook,译自Proceedings of Con-ference in Honor of C.N.Yang’s 85th Birthday,pp.513-516),李香莲译。展开更多
An intrinsic magnetic topological insulator(TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can provide a shortcut to various novel ...An intrinsic magnetic topological insulator(TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can provide a shortcut to various novel topological quantum effects but remained elusive experimentally for a long time. Here we report the experimental realization of thin films of an intrinsic magnetic TI, MnBi2Te4, by alternate growth of a Bi2Te3 quintuple layer and a MnTe bilayer with molecular beam epitaxy. The material shows the archetypical Dirac surface states in angle-resolved photoemission spectroscopy and is demonstrated to be an antiferromagnetic topological insulator with ferromagnetic surfaces by magnetic and transport measurements as well as first-principles calculations. The unique magnetic and topological electronic structures and their interplays enable the material to embody rich quantum phases such as quantum anomalous Hall insulators and axion insulators at higher temperature and in a well-controlled way.展开更多
文摘本文由三篇译文组成,分别为张首晟的《高温超导:对称与反射》(High TcSuperconductivity:Symmetries and Reflections,译自Symmetry & Modern Physics:C.N.Yang Retirement Symposium,18-23)、乔玲丽的《杨氏金字塔里遗忘的珠宝》(A Forgotten Treasure of Yang’s Pyramid,译自Proceedings of Conference in Honor of C.N.Yang’s 85th Birthday,pp.469-476),和赵午的《杨振宁和我在石溪读书的日子》(Chen-Ning Yang and My Student Days at Stony Brook,译自Proceedings of Con-ference in Honor of C.N.Yang’s 85th Birthday,pp.513-516),李香莲译。
基金Supported by the Ministry of Science and Technology of Chinathe National Science Foundation of Chinathe Beijing Advanced Innovation Center for Future Chip(ICFC)
文摘An intrinsic magnetic topological insulator(TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can provide a shortcut to various novel topological quantum effects but remained elusive experimentally for a long time. Here we report the experimental realization of thin films of an intrinsic magnetic TI, MnBi2Te4, by alternate growth of a Bi2Te3 quintuple layer and a MnTe bilayer with molecular beam epitaxy. The material shows the archetypical Dirac surface states in angle-resolved photoemission spectroscopy and is demonstrated to be an antiferromagnetic topological insulator with ferromagnetic surfaces by magnetic and transport measurements as well as first-principles calculations. The unique magnetic and topological electronic structures and their interplays enable the material to embody rich quantum phases such as quantum anomalous Hall insulators and axion insulators at higher temperature and in a well-controlled way.
