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Topological Surface State Evolution in BiSe via Surface Etching
Ziqin Yue, Jianwei Huang, Ruohan Wang +10
Topological insulators are materials with an insulating bulk interior while maintaining gapless boundary states against back scattering. BiSe is a prototypical topological…
Real-space and reciprocal-space topology in the Eu(GaAl) square net system
Jaime M. Moya, Jianwei Huang, Shiming Lei +5
Magnetotransport measurements on the centrosymetric square-net Eu(GaAl) compounds reveal evidence for both reciprocal- and real-space topology. For compositions $0.…
Ideal Weak Topological Insulator and Protected Helical Saddle Points
Ji Seop Oh, Tianyi Xu, Nikhil Dhale +16
The paradigm of classifying three-dimensional (3D) topological insulators into strong and weak ones (STI and WTI) opens the door for the discovery of various topological phases of…
Kramers nodal lines and Weyl fermions in SmAlSi
Yichen Zhang, Yuxiang Gao, Xue-Jian Gao +16
Kramers nodal lines (KNLs) have recently been proposed theoretically as a special type of Weyl line degeneracy connecting time-reversal invariant momenta. KNLs are robust to spin o…
Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa
Shiming Lei, Kevin Allen, Jianwei Huang +17
Magnetic topological semimetals (TSMs) allow for an effective control of the topological electronic states by tuning the spin configuration, and therefore are promising materials f…
Nonsymmorphic Symmetry-Protected Band Crossings in a Square-Net Metal PtPb
Han Wu, Alannah M. Hallas, Xiaochan Cai +15
Topological semimetals with symmetry-protected band crossings have emerged as a rich landscape to explore intriguing electronic phenomena. Nonsymmorphic symmetries in particular ha…
Room-Temperature Topological Phase Transition in Quasi-One-Dimensional Material BiI
Jianwei Huang, Sheng Li, Chiho Yoon +16
Quasi-one-dimensional (1D) materials provide a superior platform for characterizing and tuning topological phases for two reasons: i) existence for multiple cleavable surfaces that…
Electronic Structure Examination on the Topological Properties of CaMnSb by Angle-Resolved Photoemission Spectroscopy
Hongtao Rong, Liqin Zhou, Junbao He +15
We have carried out detailed high resolution ARPES measurements and band structure calculations to study the electronic structure of CaMnSb. The observed Fermi surface mainly…
Detailed Electronic Structure of the Three-Dimensional Fermi Surface and its Sensitivity to Charge Density Wave Transition in ZrTe3 Revealed by High Resolution Laser-Based Angle-Resolved Photoemission Spectroscopy
Shou-Peng Lyu, Li Yu, Jian-Wei Huang +9
The detailed information of the electronic structure is the key for understanding the nature of charge density wave (CDW) order and its relationship with superconducting order in m…
Evidence of Electron-Hole Imbalance in WTe2 from High-Resolution Angle-Resolved Photoemission Spectroscopy
Chenlu Wang, Yan Zhang, Jianwei Huang +25
WTe2 has attracted a great deal of attention because it exhibits extremely large and nonsaturating magnetoresistance. The underlying origin of such a giant magnetoresistance is sti…
Electronic Evidence for Type II Weyl Semimetal State in MoTe2
Aiji Liang, Jianwei Huang, Simin Nie +33
Topological quantum materials, including topological insulators and superconductors, Dirac semimetals and Weyl semimetals, have attracted much attention recently for their unique e…
Electronic Evidence of Temperature-Induced Lifshitz Transition and Topological Nature in ZrTe5
Yan Zhang, Chenlu Wang, Li Yu +25
The topological materials have attracted much attention recently. While three-dimensional topological insulators are becoming abundant, two-dimensional topological insulators remai…