Atom-in-jellium predictions of the shear modulus at high pressure
Abstract
Atom-in-jellium calculations of the Einstein frequency in condensed matter and of the equation of state were used to predict the variation of shear modulus from zero pressure to ~ g/cm, for several elements relevant to white dwarf (WD) stars and other self-gravitating systems. This is by far the widest range reported electronic structure calculation of shear modulus, spanning from ambient through the one-component plasma to extreme relativistic conditions. The predictions were based on a relationship between Debye temperature and shear modulus which we assess to be accurate at the o(10%) level, and is the first known use of atom-in-jellium theory to calculate a shear modulus. We assessed the overall accuracy of the method by comparing with experimental measurements and more detailed electronic structure calculations at lower pressures.
Keywords
Cite
@article{arxiv.2105.12303,
title = {Atom-in-jellium predictions of the shear modulus at high pressure},
author = {Damian C. Swift and Thomas Lockard and Sebastien Hamel and Christine J. Wu and Lorin X. Benedict and Philip A. Sterne},
journal= {arXiv preprint arXiv:2105.12303},
year = {2022}
}