Nature Communications (Feb 2022)

Light-induced dimension crossover dictated by excitonic correlations

  • Yun Cheng,
  • Alfred Zong,
  • Jun Li,
  • Wei Xia,
  • Shaofeng Duan,
  • Wenxuan Zhao,
  • Yidian Li,
  • Fengfeng Qi,
  • Jun Wu,
  • Lingrong Zhao,
  • Pengfei Zhu,
  • Xiao Zou,
  • Tao Jiang,
  • Yanfeng Guo,
  • Lexian Yang,
  • Dong Qian,
  • Wentao Zhang,
  • Anshul Kogar,
  • Michael W. Zuerch,
  • Dao Xiang,
  • Jie Zhang

DOI
https://doi.org/10.1038/s41467-022-28309-5
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 7

Abstract

Read online

The relationship between the charge density wave and excitonic correlations in a layered compound 1T-TiSe2 has remained controversial. Here, the authors observe a photo-induced dimensional crossover of the charge density wave and conclude that excitonic correlations are responsible for its out-of-plane phase coherence.