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VOLUME 83 (2006) | ISSUE 5 | PAGE 227
Quantum phase transitions and backbending in even-even \boldsymbol{N\sim90} nuclei
PACS: 05.70.Fh, 21.10.Re, 21.60.Jz, 27.70.+q
Abstract
We extend the classical Landau theory for rotating nuclei and show that the backbending in 162Yb, that comes about as a result of the two-quasiparticle alignment, is identified with the second order phase transition. We found that the backbending in 156Dy, caused by the instability of γ-vibrations in the rotating frame, corresponds to the first order phase transition. We suggest the empirical rule to determine the type of the phase transition in rotating nuclei undergoing a backbending.