K.A. Müller
Journal of the Physical Society of Japan
We present theory a of structural phase transitions in which the lowering of symmetry originates from a Jahn-Teller effect of the ionic constituents with electronic E-type doublets. We consider a model in which the three lowest vibronic states of the Jahn-Teller complexes are well separated from the higher excitations. The static and dynamic properties are studied in an S=1 pseudospin representation. © 1972 The American Physical Society.
K.A. Müller
Journal of the Physical Society of Japan
E. Pytte, H. Thomas
Physical Review
J.G. Bednorz, K.A. Müller, et al.
Physical Review B
B. Pümpin, H. Keller, et al.
Zeitschrift für Physik B Condensed Matter