Document Type
Article
Publication Date
8-1-1999
Publisher
American Physical Society
Abstract
Infrared spectroscopy is used to investigate the electronic structure and charge carrier relaxation in crystalline films of CrO2 which is the simplest of all half-metallic ferromagnets. Chromium dioxide is a bad metal at room temperature but it has a remarkably low residual resistivity (<5 >μΩ cm) despite the small spectral weight associated with free carrier absorption. The infrared measurements show that low residual resistivity is due to the collapse of the scattering rate at ω<2000 >cm-1. The blocking of the relaxation channels at low v and T can be attributed to the unique electronic structure of a half-metallic ferromagnet. In contrast to other ferromagnetic oxides, the intraband spectral weight is constant below the Curie temperature.
Recommended Citation
Singley, E. J., Weber, C. P., Basov, D. N., Barry, A., & Coey, J. M. D. (1999). Charge dynamics in the half-metallic ferromagnet CrO 2. Physical Review B, 60(6), 4126–4130. https://doi.org/10.1103/PhysRevB.60.4126
Comments
Copyright © 1999 American Physical Society. Reprinted with permission.