Jahn-Teller distortions and the supershell effect in metal nanowires |
| |
Authors: | Urban D F Bürki J Zhang C-H Stafford C A Grabert Hermann |
| |
Institution: | Physikalisches Institut, Albert-Ludwigs-Universit?t, D-79104 Freiburg, Germany. |
| |
Abstract: | A stability analysis of metal nanowires shows that a Jahn-Teller deformation breaking cylindrical symmetry can be energetically favorable, leading to stable nanowires with elliptic cross sections. The sequence of stable cylindrical and elliptical nanowires allows for a consistent interpretation of experimental conductance histograms for alkali metals, including both the electronic shell and supershell structures. It is predicted that for gold, elliptical nanowires are even more likely to form since their eccentricity is smaller than for alkali metals. The existence of certain metastable superdeformed nanowires is also predicted. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|