Table 2 Values of the coefficients of the polynomial determined from a fit to the energy profiles of amplitudes of Ag(25) and Bu(26) modes.

From: Anti-Jahn-Teller effect induced ultrafast insulator to metal transition in perovskite BaBiO3

Coefficients

Value

a3 (meV amu−3/2 Å−3)

1027

a4 (meV amu−2 Å−4)

480.3

b4 (meV amu−2 Å−4)

117.8

g (meV amu−3/2 Å−3)

43.65

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