NEUTRAL PAIR WIGNER CRYSTAL-FORMATION IN SEMIMETALS

被引：9

作者：

KASUYA, T

机构：

[1] Department of Physics, Tohoku University, Aramaki, Aoba

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1992年 / 61卷 / 07期

关键词：

WIGNER CRYSTAL; SEMIMETAL; ELECTRON-HOLE PAIR; LA-MONOPNICTIDES; LASB; CE-MONOPNICTIDES;

D O I：

10.1143/JPSJ.61.2206

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Wigner crystal formation of the neutral electron-hole pair in semimetals such as LaSb was studied by using a simplified phenomenological effective Hamiltonian model. It was shown that before the band gap closes, the transition to the Wigner crystal with a finite number of pairs occur but it resembles the Wigner crystal liquid. As the overlap between two bands increases, it changes to the usual band state with the Coulomb effect. Various puzzling properties in La-monopnictides as well as Ce-monopnictides can be explained by this model.

引用

页码：2206 / 2208

页数：3