Quantum well behavior without confining barrier observed via dynamically screened photon field

被引：21

作者：

Barman, SR

Häberle, P

Horn, K

Maytorena, JA

Liebsch, A

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Inter Univ Consortium, Indore 452001, Madhya Pradesh, India

[3] Univ Tecn Federico Santa Maria, Valparaiso, Chile

[4] Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62210, Morelos, Mexico

[5] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.86.5108

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angle-resolved photoemission spectra from Na adlayers on Al(111) reveal features which behave like quantum well resonances although the substrate provides no confining barrier. These features are observed in a narrow photon energy range where overlayer collective excitations cause resonant enhancement of the photoemission intensity. The quantum well behavior is shown to be due to surface resonances of the Na/Al system. The resonances are observable using photoemission because of spatial confinement and dynamical enhancement of the local electric field within the: Na films.

引用

页码：5108 / 5111

页数：4

共 27 条

[1] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].