Surface and image-potential states on MgB2(0001) surfaces -: art. no. 172512

被引：31
|
作者：
Silkin, VM [1 ]
Chulkov, EV
Echenique, PM
机构：
[1] DIPC, San Sebastian 20018, Spain
[2] Univ Pais Vasco Euskal Herriko Unibertsitatea, Fac Ciencias Quim, Dept Fis Mat, San Sebastian 20018, Basque Country, Spain
[3] Univ Pais Vasco Euskal Herriko Unibertsitatea, Fac Ciencias Quim, Ctr Mixto CSIC UPV EHU, San Sebastian 20018, Basque Country, Spain
来源：
PHYSICAL REVIEW B | 2001年 / 64卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.64.172512
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present self-consistent pseudopotential calculations of surface and image-potential states on MgB2(0001) for both B-terminated (B-t) and Mg-terminated (Mg-t) surfaces. We find a variety of very clear surface and subsurface states as well as resonance image-potential states n = 1,2 on both surfaces. The surface layer density of states (DOS) at EF is increased by 55% at the B-t and by 90% at the Mg-t surface compared to DOS in the corresponding bulk layers.
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页数：4
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