First-Principles Calculations of Hyperfine Parameters of Solid Iodine under High Pressure
Using the full-potential linear muffin-tin-orbital method, we study hyperfine parameters of solid iodine under high pressure theoretically. Above 15 GPa, the direction of principal component of the electric field gradient (EFG) suddenly changes as reported by Mössbauer experiments. In the monatomic phase, the large asymmetry parameter of EFG is obtained as was observed by Pasternak et al. At the molecular dissociation pressure, the change of the contact density is very small. We conclude that for the solid iodine under pressure the molecular dissociation picture which was proposed by X-ray experiments is consistent with that of the Mössbauer experiments reported by Pasternak et al.
- 高圧力の科学と技術 = The Review of high pressure science and technology
高圧力の科学と技術 = The Review of high pressure science and technology 7, 157-159, 1998
The Japan Society of High Pressure Science and Technology