Pairing in dense lithium
Article Abstract:
The electronic structure of lithium varies significantly from nearly free-electron behaviour at high pressure. It is predicted that lithium undergoes a symmetry-breaking distortion at high pressures, leading to a paired ground state. The distortion is introduced within face-centred cubic but has more extensive applicability. The initial distortion is linked with the Jahn-Teller mechanism, while further distortion leading to the pairing is determined by the delicate balance between exclusionary band-structure effects and exchange.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Old and blue white-dwarf stars as a detectable source of microlensing events
Article Abstract:
The burnt-out cores of middle-weight stars, known as white dwarfs, cool at a predictable rate, allowing their temperature to be used to calculate their age. A new model of white dwarfs includes a detailed atmospheric model attached to the interior. The Microlensing study finds that the atmosphere of cool white dwarfs can contain hydrogen molecules which absorb the red part of the spectrum, making the older stars appear blue. Details of the study are presented.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: White dwarfs as quantum crystals. Ecology of globular clusters
- Abstracts: SIV adaption to human cells. Killer in search of a motive?
- Abstracts: Tilt and northward offset of Cordilleran batholiths resolved using igneous barometry. A refractory HIMU component in the sources of island-arc magma
- Abstracts: Oblique rifting in a slow-spreading ridge. Spreading rate dependence of gravity anomalies along oceanic transform faults