Quasiparticle band structure of HgSe

被引:24
作者
Rohlfing, M [1 ]
Louie, SG
机构
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
来源
PHYSICAL REVIEW B | 1998年 / 57卷 / 16期
关键词
D O I
10.1103/PhysRevB.57.R9392
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Motivated by a recent discussion about the existence of a fundamental gap in HgSe [Phys. Rev. Lett. 78, 3165 (1997)], we calculate the quasiparticle band structure of HgSe within the GW approximation for the electron self-energy. The band-structure results show that HgSe is a semimetal, which is in agreement with most experimental data. We observe a strong wave-vector dependence of the self-energy of the lowest conduction band, leading to an increased dispersion and a small effective mass. This may help to interpret recent photoemission spectroscopy measurements. [S0163-1829(98)50816-8].
引用
收藏
页码:R9392 / R9395
页数:4
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