ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Simultaneous measurements of thermal diffusion processes of electrons and phonons in 1T-TiS2 and intercalation compounds MxTiS2 (M=Mn, Fe, Co, and Ni; x=0.1–1/3) have been made in the temperature range 78–280 K using a pulsed laser-induced "transient thermoelectric (TTE)'' or photodiffusion effect. The initial stage of the decay curves of TTE voltage observed solely in TiS2 gives the electron-hole recombination times τr, from which capture cross sections are evaluated. At the second stage, two relaxation times (τf and τs) are observed in all crystals; the fast and slow components are associated with the intra- and intervalley scatterings through electron-phonon interactions, respectively. The evaluation of the final stage yields the thermal diffusion coefficient DT and thermal conductivity κ of these materials. The effect of intercalation of the guest 3d metals on these quantities is qualitatively discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.337988
