The heat capacity of TmAsO4 near its Jahn-Teller transition; Evidence of a low-lying excited state

On the extremum behaviour of the heat ca

On the extremum behaviour of the heat capacity of species with a low-lying excited electronic state and of isomeric mixtures: a solvable model

✍ Zdeněk Slanina 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 452 KB

Within a simple two-state model it is shown that there exists a pronounced maximum in the temperature dependence of the contribution to Cz from the low-lying first excited electronic state; the same reasoning also applies to two-isomer mixtures. The position of the maximum is, for equal degeneracy f