Access the full text.
Sign up today, get DeepDyve free for 14 days.
J. M. Ziman (1960)
Electrons and Phonons
Contrary to what has been reported in the literature, the thermal conductivities between 2 and 20 K of scandium, yttrium, and cerium show a behavior which is typical of a normal nonmagnetic metal of low purity at temperatures T < 0.1θ (θ is the Debye temperature). For scandium and yttrium the thermal conductivity can be separated into a linear (T) and a very small quadratic (T 2) contribution. The Lorenz numbers estimated from the linear terms are very close to the theoretical value L 0 = 2.45 × 10 −8 WΩ/K2 predicted by the Wiedemann-Franz law for pure electronic heat conduction limited by impurities. In cerium there is no apparent anomaly around the paramagnetic-antiferromagnetic transition of the Β-phase present. The Lorenz numbers calculated at 4.2 and 20 K have the values 2.68 × 10−8 and 3.83 × 10−8 WΩ/K2, respectively. It seems that in all the three samples, besides the usual predominant linear electronic conduction, a small contribution due to the phonons is present which in the case of scandium and yttrium reveals itself as a quadratic function of T.
Journal of Low Temperature Physics – Springer Journals
Published: May 19, 2004
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.