Dynamical matrices, Born effective charges, dielectric permittivity tensors, and interatomic force constants from density-functional perturbation theory

Xavier Gonze, Changyol Lee

Результат исследований: Вклад в журналСтатьярецензирование

2247 Цитирования (Scopus)

Аннотация

Starting from the knowledge of first-order changes of wave functions and density with respect to small atomic displacements or infinitesimal homogeneous electric fields within the density-functional theory, we write the expressions for the diagonal or mixed second-order derivatives of the total energy with respect to these perturbations: dynamical matrices for different wave vectors, Born effective-charge tensors and electronic dielectric permittivity tensors. Interatomic force constants and the phonon-band structure are then obtained by computing the Fourier transform of dynamical matrices on a regular mesh of wave vectors, with an eventual, separate treatment of the long-range dipole-dipole interaction. The same ingredients also allow one to compute the low-frequency response of the crystal to homogeneous electric fields.

Язык оригиналаАнглийский
Страницы (с-по)10355-10368
Число страниц14
ЖурналPhysical Review B - Condensed Matter and Materials Physics
Том55
Номер выпуска16
DOI
СостояниеОпубликовано - 1997
Опубликовано для внешнего пользованияДа

Fingerprint

Подробные сведения о темах исследования «Dynamical matrices, Born effective charges, dielectric permittivity tensors, and interatomic force constants from density-functional perturbation theory». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать