Evolution of one-dimensional electronic dynamics in Nb2n+1SinTe4n+2

The electronic dynamics in Nb2n+1SinTe4n+2 with varying component n are systematically investigated by low -temperature scanning tunneling microscopy/spectroscopy (STM/STS). Our quasiparticle interferences reveal a nondecay standing wave at the Fermi level, proving the one-dimensional (1D) nature of the charge carriers (holes) in the materials. The energy and component dependence of phase relaxation length l phi and lifetime tau of 1D holes are unveiled and found to be consistent with the Tomonaga-Luttinger liquid theory. Our work demonstrates Nb2n+1SinTe4n+2 as a platform to manipulate 1D physics and offers an alternative perspective for studying electronic dynamics of non-Fermi liquids through STM experiments.