Electrodynamics of Bechgaard Salts: Optical Properties of One-Dimensional Metals

Figure 1

(a) Reflectivity of K₂Pt(CN)₄Br_0.3⋅H₂O (abbreviated KCP) measured parallel and perpendicular to the chains at different temperatures as indicated. (b) Optical conductivity of KCP for 𝐄‖ stacks at 𝑇=40K (after [4, 5]). The excitations across the single-particle Peierls gap lead to a broadband in the mid-infrared while the small and sharp peak centered around 15 cm⁻¹ is due to the pinned mode.

(a)

(b)