PHOTOEMISSION-STUDY OF QUANTUM CONFINEMENT BY A FINITE BARRIER - CU/CO(WEDGE)/CU(100)

被引：19

作者：

LI, DQ ^{[1
]}

PEARSON, J ^{[1
]}

MATTSON, JE ^{[1
]}

BADER, SD ^{[1
]}

JOHNSON, PD ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.51.7195

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quantum confinement is studied with angle-resolved photoemission for ultrathin Cu separated from the Cu(100) substrate by an epitaxial wedge of Co (011) that serves as a finite barrier. For 2 ML of Cu, the photoemission intensities of the Cu sp quantum-well (QW) state at 1.6 eV binding energy and the corresponding d-band-derived QW state at 2.4 eV increase rapidly with the thickness of the Co barrier and indicate stronger confinement of the d QW state than of the sp state. Implications for the magnetic coupling and magnetoresistance are discussed. © 1995 The American Physical Society.

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页码：7195 / 7199

页数：5

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