Critical Attenuation of Sound by Soft Modes in SrTi<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>

B. Berre; K. Fossheim; K. A. Müller

doi:10.1103/PhysRevLett.23.589

Critical Attenuation of Sound by Soft Modes in SrTi $O_{3}$

B. Berre, K. Fossheim, and K. A. Müller

Phys. Rev. Lett. 23, 589 – Published 15 September 1969

Abstract

Measurements of acoustic attenuation in SrTi $O_{3}$ reveal critical scattering behavior near the structural phase transition at $T_{a} ≅ 105$ K. Power laws for the frequency and temperature dependences have been found. By these measurements the behavior of the soft mode frequencies could be studied in a temperature range one order of magnitude closer to $T_{a}$ than by other methods so far.