Y
Ya Feng
Researcher at Chinese Academy of Sciences
Publications - 31
Citations - 1574
Ya Feng is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Topological insulator & Angle-resolved photoemission spectroscopy. The author has an hindex of 16, co-authored 31 publications receiving 1267 citations. Previous affiliations of Ya Feng include Synchrotron Radiation Center.
Papers
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Journal ArticleDOI
Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu 2 Si
Baojie Feng,Botao Fu,Shusuke Kasamatsu,Suguru Ito,Peng Cheng,Cheng-Cheng Liu,Ya Feng,Shilong Wu,Sanjoy K. Mahatha,Polina M. Sheverdyaeva,Paolo Moras,Masashi Arita,Osamu Sugino,Tai-Chang Chiang,Kenya Shimada,Koji Miyamoto,Taichi Okuda,Kehui Wu,Lan Chen,Yugui Yao,Iwao Matsuda +20 more
TL;DR: The discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si is reported based on combined theoretical calculations and angle-resolved photoemission spectroscopy measurements to establish Cu2 Si as a platform to study the novel physical properties in two- dimensional Dirac materials and provide opportunities to realize high-speed low-dissipation devices.
Journal ArticleDOI
Evidence of Topological Surface State in Three-Dimensional Dirac Semimetal Cd3As2
Hemian Yi,Zhijun Wang,Chaoyu Chen,Youguo Shi,Ya Feng,Aiji Liang,Zhuojin Xie,Shaolong He,Junfeng He,Yingying Peng,Xu Liu,Yan Liu,Lin Zhao,Guodong Liu,Xiaoli Dong,Jun Zhang,Masashi Nakatake,Masashi Arita,Kenya Shimada,Hirofumi Namatame,Masaki Taniguchi,Zuyan Xu,Chuangtian Chen,Xi Dai,Zhong Fang,Xingjiang Zhou +25 more
TL;DR: The electronic structure of Cd3As2 is investigated by angle-resolved photoemission measurements on the crystal surface and detailed band structure calculations and the topological surface state with a linear dispersion approaching the Fermi level is identified for the first time.
Journal ArticleDOI
Robustness of topological order and formation of quantum well states in topological insulators exposed to ambient environment
Chaoyu Chen,Shaolong He,Hongming Weng,Wentao Zhang,Lin Zhao,Haiyun Liu,Xiaowen Jia,Daixiang Mou,Shanyu Liu,Junfeng He,Yingying Peng,Ya Feng,Zhuojin Xie,Guodong Liu,Xiaoli Dong,Jun Zhang,Xiaoyang Wang,Qinjun Peng,Zhimin Wang,Shenjin Zhang,Feng Yang,Chuangtian Chen,Zuyan Xu,Xi Dai,Zhong Fang,Xingjiang Zhou +25 more
TL;DR: High resolution angle-resolved photoemission measurements are reported to directly probe the surface state of the prototypical topological insulators, Bi2Se3 and Bi2Te3, upon exposing to various environments and find that the topological order is robust even when the surface is exposed to air at room temperature.
Journal ArticleDOI
Discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si
Baojie Feng,Botao Fu,Shusuke Kasamatsu,Suguru Ito,Peng Cheng,Cheng-Cheng Liu,Ya Feng,Shilong Wu,Sanjoy K. Mahatha,Polina M. Sheverdyaeva,Paolo Moras,Masashi Arita,Osamu Sugino,Tai-Chang Chiang,Kenya Shimada,Koji Miyamoto,Taichi Okuda,Kehui Wu,Lan Chen,Yugui Yao,Iwao Matsuda +20 more
TL;DR: In this article, the Dirac nodal lines in monolayer Cu2Si have been observed to form two concentric loops centred around the δ-Gamma point and are protected by mirror reflection symmetry.
Journal ArticleDOI
Spin texture in type-II Weyl semimetal WTe 2
Baojie Feng,Yang-Hao Chan,Ya Feng,Ro-Ya Liu,Mei-Yin Chou,Mei-Yin Chou,Mei-Yin Chou,Kenta Kuroda,Koichiro Yaji,Ayumi Harasawa,Paolo Moras,Alexei Barinov,Walid Malaeb,Walid Malaeb,Cédric Bareille,Takeshi Kondo,Shik Shin,Fumio Komori,Tai-Chang Chiang,Tai-Chang Chiang,Youguo Shi,Iwao Matsuda +21 more
TL;DR: In this paper, the spin and angle-resolved photoemission spectroscopy (SARPES) was used to determine the band structure and spin texture of a type-II Weyl semimetal.