Dielectric spectroscopy inSrTiO3
Physical review. B, Condensed matter1994Vol. 50(1), pp. 601–604
Citations Over TimeTop 10% of 1994 papers
Abstract
Measurements of the complex dielectric permittivity in nominally pure ${\mathrm{SrTiO}}_{3}$ are reported for frequencies ${10}^{\mathrm{\ensuremath{-}}3}$ Hz\ensuremath{\le}\ensuremath{\nu}\ensuremath{\le}${10}^{8}$ Hz and temperatures 0.1 K\ensuremath{\le}T\ensuremath{\le}300 K. The experiments reveal relaxation phenomena similar to those reported from elastic measurements. The onset of constant loss below 50 K and a low-temperature relaxation reveals characteristic features of a tunneling motion. These phenomena can be interpreted to be characteristic of a quantum phase transition into a coherent quantum state.
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