K.A. Müller, W. Berlinger
Physical Review Letters
The trigonal-to-pseudotetragonal structural first-order transition in [111]-stressed SrTiO3 is shown to be a realization of the continuous three-state Potts model. The measured order-parameter discontinuity at the transition, Δ →, depends on the trigonal order parameter [111] M as |Δ →||M|δ*, with δ*=0.62±0.10 (mean-field theory predicts δ*=1). This agrees with renormalization-group predictions, and proves that the model has a first-order transition even in the fluctuation-dominated region. © 1977 The American Physical Society.
K.A. Müller, W. Berlinger
Physical Review Letters
O.F. Schirmer, W. Berlinger, et al.
Solid State Communications
K.A. Müller, Th. von Waldkirch, et al.
Solid State Communications
T. Riesterer, J.G. Bednorz, et al.
Applied Physics A Solids and Surfaces