English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

A smooth path of rearrangement from the body-centered cubic (bcc) to theface-centered cubic (fcc) lattice is obtained by introducing a single parameterto cuboidal lattice vectors. As a result, we obtain analytical expressions interms of lattice sums for the cohesive energy. This is described by aLennard-Jones (LJ) interaction potential and the sticky hard sphere (SHS) modelwith an $r^{-n}$ long-range attractive term. These lattice sums are evaluatedto computer precision by expansions in terms of a fast converging series ofBessel functions. Applying the whole range of lattice parameters for the SHSand LJ potentials demonstrates that the bcc phase is unstable (or at bestmetastable) toward distortion into the fcc phase. Even if more accuratepotentials are used, such as the extended LJ potential for argon or chromium,the bcc phase remains unstable. This strongly indicates that the appearance ofa low temperature bcc phase for several elements in the periodic table is dueto higher than two-body forces in atomic interactions.

Instability of the Body-Centered Cubic Lattice within the Sticky Hard Sphere and Lennard-Jones Model obtained from Exact Lattice Summations