TY - JOUR
T1 - Periodicity-Doubling Cascades
T2 - Direct Observation in Ferroelastic Materials
AU - Everhardt, Arnoud S.
AU - Damerio, Silvia
AU - Zorn, Jacob A.
AU - Zhou, Silang
AU - Domingo, Neus
AU - Catalan, Gustau
AU - Salje, Ekhard K.H.
AU - Chen, Long Qing
AU - Noheda, Beatriz
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/8/22
Y1 - 2019/8/22
N2 - Very sensitive responses to external forces are found near phase transitions. However, transition dynamics and preequilibrium phenomena are difficult to detect and control. We have observed that the equilibrium domain structure following a phase transition in ferroelectric and ferroelastic BaTiO3 is attained by halving of the domain periodicity multiple times. The process is reversible, with periodicity doubling as temperature is increased. This observation is reminiscent of the period-doubling cascades generally observed during bifurcation phenomena, and, thus, it conforms to the "spatial chaos" regime earlier proposed by Jensen and Bak [Phys. Scr. T 9, 64 (1985)PHSTER0281-184710.1088/0031-8949/1985/T9/009] for systems with competing spatial modulations.
AB - Very sensitive responses to external forces are found near phase transitions. However, transition dynamics and preequilibrium phenomena are difficult to detect and control. We have observed that the equilibrium domain structure following a phase transition in ferroelectric and ferroelastic BaTiO3 is attained by halving of the domain periodicity multiple times. The process is reversible, with periodicity doubling as temperature is increased. This observation is reminiscent of the period-doubling cascades generally observed during bifurcation phenomena, and, thus, it conforms to the "spatial chaos" regime earlier proposed by Jensen and Bak [Phys. Scr. T 9, 64 (1985)PHSTER0281-184710.1088/0031-8949/1985/T9/009] for systems with competing spatial modulations.
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U2 - 10.1103/PhysRevLett.123.087603
DO - 10.1103/PhysRevLett.123.087603
M3 - Article
C2 - 31491229
AN - SCOPUS:85071896935
SN - 0031-9007
VL - 123
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 087603
ER -