Twist Mode in Spherical Alkali Metal Clusters

Дата и время публикации : 2000-10-02T15:41:46Z

Авторы публикации и институты :
V. O. Nesterenko
J. R. Marinelli
F. F. de Souza Cruz
W. Kleinig
P. -G. Reinhard

Ссылка на журнал-издание: Phys.Rev.Lett.85:3141-3144,2000
Коментарии к cтатье: 8 pages, 4 figures, to be published in Phys. Rev. Lett., v.85, n.15, 2000
Первичная категория: cond-mat.mes-hall

Все категории : cond-mat.mes-hall, cond-mat.str-el, nucl-th, physics.atm-clus

Краткий обзор статьи: A remarkable orbital quadrupole magnetic resonance, so-called twist mode, is predicted in alkali metal clusters where it is represented by $I^{pi}=2^-$ low-energy excitations of valence electrons with strong M2 transitions to the ground state. We treat the twist by both macroscopic and microscopic ways. In the latter case, the shell structure of clusters is fully exploited, which is crucial for the considered size region ($8le N_ele 1314$). The energy-weighted sum rule is derived for the pseudo-Hamiltonian. In medium and heavy spherical clusters the twist dominates over its spin-dipole counterpart and becomes the most strong multipole magnetic mode.

Category: Physics