Charge Density Waves and Magnetism in Topological Semimetal Candidates GdSbxTe2− x δ

Shiming Lei, Viola Duppel, Judith M. Lippmann, Jürgen Nuss, Bettina V. Lotsch, Leslie M. Schoop

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Many topological semimetals are known to exhibit exceptional electronic properties, which are the fundamental basis for design of novel devices and further applications. Materials containing the structural motif of a square net are known to frequently be topological semimetals. In this work, the synthesis and structural characterization of the square-net-based magnetic topological semimetal candidates GdSbxTe2− x δ (0≤ x ≤ 1, δ, indicating the vacancy level) are reported. The structural evolution of the series with Sb substitution is studied, finding a transition between a simple tetragonal square-net structure to complex superstructure formations due to the presence of charge density waves. The structural modulations coincide with a significant modification of the magnetic order. This work thus establishes GdSbxTe2− x δ as a platform to study the interplay between crystal symmetry, band filling, charge density wave, and magnetism in a topological semimetal candidate.

Original languageEnglish (US)
Article number1900045
JournalAdvanced Quantum Technologies
Volume2
Issue number10
DOIs
StatePublished - Oct 1 2019

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Electronic, Optical and Magnetic Materials
  • Computational Theory and Mathematics
  • Mathematical Physics
  • Electrical and Electronic Engineering

Keywords

  • charge density waves
  • magnetic properties
  • square nets
  • topological semimetals

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