Terahertz-frequency conductivity of charge stripes in the antiferromagnet La5/3Sr1/3NiO4

We report the complex refractive index of La5/3Sr1/3NiO4 over the terahertz frequency range, obtained using time-domain spectroscopy. Negligible change in the complex refractive index with magnetic flux densities up to 6T was seen, while changes were observed as the lattice temperature was increased...

詳細記述

書誌詳細
主要な著者: Lloyd-Hughes, J, Prabhakaran, D, Castro-Camus, E, Boothroyd, A, Johnston, M, IEEE
フォーマット: Conference item
出版事項: 2007
その他の書誌記述
要約:We report the complex refractive index of La5/3Sr1/3NiO4 over the terahertz frequency range, obtained using time-domain spectroscopy. Negligible change in the complex refractive index with magnetic flux densities up to 6T was seen, while changes were observed as the lattice temperature was increased from 1.5 K to the charge-ordering temperature at 220 K. The terahertz frequency response therefore originates from the dielectric function rather than the magnetic permeability.