Terahertz time domain spectroscopic evidence of charge-density-waves in Nd0.5Sr0.5MnO3 thin films

Abstract

Terahertz time domain spectroscopy was employed to explore the low-energy dynamics in the half-doped Nd0.5Sr0.5MnO3 (100) films. We have observed evolution of a peak structure in conductivity at around ∼4 meV which suggests the existence of charge-density waves.