Theory of Phase Transition in Solid Ortho-Hydrogen. I
Open Access
- 1 July 1975
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 54 (1) , 19-29
- https://doi.org/10.1143/ptp.54.19
Abstract
The orientiational phase transition in solid ortho-hydrogen of a face-centred cubic Pa3 structure is theoretically investigated. The method of symmetry-breaking potential is applied with the use of the inverse temperature expansion. The truncated electric quadrupole-quadrupole interaction is taken in the Hamiltonian and the sum of the pair interaction is extended to the fifth neighbour pairs. The expression of the free energy is derived up to third order of the inverse temperature. The rotation-phonon coupling is also taken into account. It is found that a first order phase transition occurs so long as the rotation-phonon couplling constant exceeds a certain critical value.Keywords
This publication has 3 references indexed in Scilit:
- The effect of short-range order on the phase transition in solid hydrogenIl Nuovo Cimento B (1971-1996), 1968
- Effects Produced by the Ionic Bombardment of GermaniumProceedings of the Physical Society. Section B, 1955
- A theory of the rotations of molecules in solids and of the dielectric constant of solids and liquidsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1935