Electrostatic energy and phonon properties of Yukawa crystals

A. Kozhberov
Phys. Rev. E 98, 063205 – Published 14 December 2018

Abstract

We study electrostatic and phonon properties of Yukawa crystals. It is shown that in the harmonic approximation these systems which are used in the theory of dusty plasma can be described analytically by the model from the theory of neutron stars and white dwarfs. Using this approximation, we consider properties of body-centered-cubic (bcc), face-centered-cubic (fcc), hexagonal-close-packed (hcp), and MgB2 lattices. Studies of MgB2 and hcp lattices in the context of Yukawa systems are lacking. It is shown that they never possess the smallest potential energy and the phase diagram of stable Yukawa crystals contains bcc and fcc lattices only. However, corrections to the charge density proportional to (κa)4 can noticeably change the structural diagram of Yukawa systems. The analytical model developed also allows us to describe low-temperature effects where numerical simulations are difficult.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 18 June 2018

DOI:https://doi.org/10.1103/PhysRevE.98.063205

©2018 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

A. Kozhberov*

  • Ioffe Institute, Politekhnicheskaya 26, Saint Petersburg 194021, Russia

  • *kozhberov@gmail.com

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 98, Iss. 6 — December 2018

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×