Abstract
Dielectric constants spectra were obtained in the single crystals LaSb, PrSb, GdSb and DySb at several temperatures. The spectra for these crystals except for LaSb show Drude's behavior with a hump due to an anomalous absorption lying at about 0.25 eV. The inverse of effective electron number (NIA) of the absorption is linear in temperature, and the NIA at each temperature is dependent on the square of the effective Bohr magneton of each rare-earth ion. The sum of the number of effective electrons due to Drude absorption and that due to infrared absorption agree well with the number of carriers obtained from their band calculations or their dHvAs. Therefore, this absorption seems to be due to the intraband transition induced by the scattering between the spin of carriers and the localized magnetic moments at each site of rare-earth ion.
Original language | English |
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Pages (from-to) | 88-91 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 240 |
Issue number | 1-2 |
DOIs | |
State | Published - 1 Sep 1997 |
Bibliographical note
Funding Information:This work was supportedb y Korea Sciencea nd EngineeringF oundation(K OSEF) through Grant No. 96-0702-02-01-3T.h e authors would like to thank the staff of UVSOR for their help and useful advicef or the experiment.
Keywords
- Infrared absorption
- Intraband transition
- Rare-earth monopnictides