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21 papers · 2 filters
Coexistence of Dirac fermion and charge density wave in square-net-based semimetal LaAuSb2
Xueliang Wu, Zhixiang Hu, David Graf +7
We report a comprehensive study of magnetotransport properties, angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) calculations on self-flux gro…
Topological magnon gap engineering in van der Waals CrI ferromagnets
Verena Brehm, Pawel Sobieszczyk, Jostein Kløgetvedt +3
The microscopic origin of the topological magnon band gap in CrI ferromagnets has been a subject of controversy for years since two main models with distinct characteristics, i…
Phonon collapse and anharmonic melting of the 3D charge-density wave in kagome metals
Martin Gutierrez-Amigo, Ðorđe Dangić, Chunyu Guo +4
The charge-density wave (CDW) mechanism and resulting structure of the AV3Sb5 family of kagome metals has posed a puzzling challenge since their discovery four years ago. In fact,…
Semi-Dirac Fermions in a Topological Metal
Yinming Shao, Seongphill Moon, A. N. Rudenko +14
Topological semimetals with massless Dirac and Weyl fermions represent the forefront of quantum materials research. In two dimensions (2D), a peculiar class of fermions that are ma…
Chemisorption Induced Formation of Biphenylene Dimer on Surfaces
Zhiwen Zeng, Dezhou Guo, Tao Wang +10
We report an example that demonstrates the clear interdependence between surface-supported reactions and molecular adsorption configurations. Two biphenyl-based molecules with two…
Purely anharmonic charge-density wave in the 2D Dirac semimetal SnP
Martin Gutierrez-Amigo, Fang Yuan, Davide Campi +3
Charge density waves (CDWs) in two-dimensional (2D) materials have been a major focus of research in condensed matter physics for several decades due to their potential for quantum…