Abstract
The phase diagram of SrEuTiO is determined experimentally by electron paramagnetic resonance and resistivity measurements and analyzed theoretically within the self-consistent phonon approximation as a function of (0.03 ⩽ ⩽ 1.0). The transition temperature of the structural instability of the system increases nonlinearly to higher temperatures with increasing . This is interpreted theoretically by a substantial alteration in the dynamics caused by a change in the double-well potential from broad and shallow to narrow and deep.
- Received 17 January 2012
DOI:https://doi.org/10.1103/PhysRevB.85.134113
©2012 American Physical Society