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Showing 1–9 of 9 results
Advanced filters: Author: Anil Rajapitamahuni Clear advanced filters

  • A Lifshitz transition is a sudden change in Fermi-surface topology that can be driven, for example, by chemical or physical pressure. Here, the authors use micro–angle resolved photoemission spectroscopy on TiSe2 and attribute the observed band-structure changes to a possible Lifshitz transition.

    • Turgut Yilmaz
    • Yi Sheng Ng
    • Elio Vescovo
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-6

  • Experimental systems in which non-trivial topology is driven by spontaneous symmetry breaking are rare. Now, topological gaps resulting from two excitonic condensates have been demonstrated in a three-dimensional material.

    • Md Shafayat Hossain
    • Zi-Jia Cheng
    • M. Zahid Hasan
    Research
    Nature Physics
    Volume: 21, P: 1250-1259

  • The authors study the non-centrosymmetric achiral material InxTaS2 by angle-resolved photoemission spectroscopy and quantum oscillations. They find that it hosts an “ideal” Kramers nodal line, well isolated at the Fermi level.

    • Yichen Zhang
    • Yuxiang Gao
    • Ming Yi
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • 2H-NbSe2 is a prototype system for studying the interplay between superconductivity and density wave orders. Here, an angle-resolved photoemission spectroscopy study provides insights into the origin of charge density wave in this material and reveals the substantial effects of uniaxial strain in modifying the electronic structure.

    • Asish K. Kundu
    • Anil Rajapitamahuni
    • Tonica Valla
    ResearchOpen Access
    Communications Materials
    Volume: 5, P: 1-7

  • Angle-resolved photoemission spectroscopy of CaNi2 shows a band with vanishing dispersion across the full 3D Brillouin zone that is identified with the pyrochlore flat band as well as two additional flat bands that arise from multi-orbital interference of Ni d-electrons.

    • Joshua P. Wakefield
    • Mingu Kang
    • Joseph G. Checkelsky
    Research
    Nature
    Volume: 623, P: 301-306

  • Semiconductor research is undergoing transformative changes thanks to the discovery and development of novel materials. The authors disclose the role of electron-phonon interaction and impurity scattering in a novel ultrawide bandgap perovskite oxide, paving the way for new applications in high-power electronics.

    • Tristan K. Truttmann
    • Jin-Jian Zhou
    • Bharat Jalan
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-8