mm-wave absorption and Raman scattering from glass-like features in fluorite mixed crystals
One way to obtain new information about the ubiquitous low-lying two-level systems found in glasses is to identify them in appropriately modified crystals and then vary the crystal properties. Here our low-temperature mm-wave absorption and Raman scattering measurements on a number of mixed fluorite crystals are reviewed. It is shown that these single-crystal materials possess a broad distribution of two-level systems similar to what is found in the amorphous state.
Sievers, A.J., J. Tu., N. Agladze, S. A. FitzGerald, and J.A. Campbell. 1998. "mm-wave absorption and Raman scattering from glass-like features in fluorite mixed crystals." Physica B 244: 159-166.
Physica B: Condensed Matter
Physics and Astronomy
Millimeter waves, Raman spectroscopy, Far-infrared spectroscopy, Mixed fluoride crystals