A. Krivchikov, A. Yushchenko, O. A. Korolyuk
Jan 10, 2008
Citations
2
Influential Citations
32
Citations
Journal
Physical Review B
Abstract
The thermal conductivity T of the crystalline and glassy phases of the two isomers of propyl alcohol has been measured. The two isomers differ by a minor chemical detail involving the position of the hydroxyl group with respect to the carbon backbone. Such a difference in molecular structure leads, however, to disparate behaviors for the temperature dependence of T, for both glass and crystal states. The T for the glass shows for 1-propanol an anomalously large plateau region comprising temperatures within 6 – 90 K, while data for isomeric 2-propanol show only a small plateau up to 10 K which is comparable to data on lower alcohols. The results emphasize the role played by internal molecular degrees of freedom as sources of strong resonant phonon scattering.