Electronic structures and photoemission spectroscopy

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Observation of the topological surface state in the nonsymmorphic topological insulator KHgSb

Physical Review B American Physical Society (APS) 96:16 (2017) 165143

Authors:

AJ Liang, J Jiang, MX Wang, Y Sun, N Kumar, C Shekhar, C Chen, H Peng, CW Wang, X Xu, HF Yang, ST Cui, GH Hong, Y-Y Xia, S-K Mo, Q Gao, XJ Zhou, LX Yang, C Felser, BH Yan, ZK Liu, YL Chen
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Photoemission study of the electronic structure of valence band convergent SnSe

Physical Review B American Physical Society (APS) 96:16 (2017) 165118

Authors:

CW Wang, YYY Xia, Z Tian, J Jiang, BH Li, ST Cui, HF Yang, AJ Liang, XY Zhan, GH Hong, S Liu, C Chen, MX Wang, LX Yang, Z Liu, QX Mi, G Li, JM Xue, ZK Liu, YL Chen
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ARPES study of the epitaxially grown topological crystalline insulator SnTe(111)

Journal of Electron Spectroscopy and Related Phenomena Elsevier 219 (2017) 35-40

Authors:

Yi Zhang, Zhongkai Liu, Bo Zhou, Yeongkwan Kim, Lexian Yang, Hyejin Ryu, Choongyu Hwang, Yulin Chen, Zahid Hussain, Zhi-Xun Shen, Sung-Kwan Mo
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Spectroscopic evidence for the gapless electronic structure in bulk ZrTe5

Journal of Electron Spectroscopy and Related Phenomena Elsevier 219 (2017) 45-52

Authors:

L Shen, MX Wang, SC Sun, J Jiang, X Xu, T Zhang, QH Zhang, YY Lv, SH Yao, YB Chen, MH Lu, YF Chen, C Felser, BH Yan, ZK Liu, LX Yang, YL Chen
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Emergence of Dirac-like bands in the monolayer limit of epitaxial Ge films on Au(1 1 1)

2D Materials 4:3 (2017) 031005

Authors:

NBM Schröter, MD Watson, LB Duffy, M Hoesch, Y Chen, T Hesjedal, TK Kim

Abstract:

After the discovery of Dirac fermions in graphene, it has become a natural question to ask whether it is possible to realize Dirac fermions in other two-dimensional (2D) materials as well. In this work, we report the discovery of multiple Dirac-like electronic bands in ultrathin Ge flms grown on Au(1 1 1) by angle-resolved photoelectron spectroscopy. By tuning the thickness of the flms, we are able to observe the evolution of their electronic structure when passing through the monolayer limit. Our discovery may signify the synthesis of germanene, a 2D honeycomb structure made of Ge, which is a promising platform for exploring exotic topological phenomena and enabling potential applications.
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