- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
|
2014年2月27日 Nature
' \6 U, _! i7 `/ Q5 l$ {; \+ U: H- X; q3 [" f t- V; F
Excitons, plasmons and phonons are some of the better known quasiparticles — exotic entities that act in some respects like ordinary particles. New types do not come along all that often but here is one — a fundamentally new many-body particle named the ‘dropleton‘. Mackillo Kira and colleagues have identified this new quantum entity, a quantum droplet created when four or more electrons and holes (electronic vacancies) form a tiny correlation bubble via the Coulomb attraction, in direct-gap semiconductors such as gallium arsenide. The cover illustrates the pair-correlation function g(r) of quantum droplets — the central peak of the correlation function shows that electrons and holes are likely to be co-located and the ripples show that otherwise they form regularly spaced shells. (Cover art: Brad Baxley.)* k9 c6 O) Y0 a; [4 k
0 v' `2 J. W$ m: K: E
|
-
总评分: 威望 + 20
包包 + 20
查看全部评分
|