THERMAL ROUGHENING OF CU(115) - AN ENERGY-RESOLVED HELIUM-ATOM-BEAM SCATTERING STUDY

被引：21

作者：

ERNST, HJ ^{[1
]}

FOLKERTS, R ^{[1
]}

SCHWENGER, L ^{[1
]}

机构：

[1] CEA SACLAY,DEPT RECH ETAT CONDENSEE ATOMS MOLEC,SERV RECH SURFACES & IRRADIAT MAT,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.52.8461

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structure of the Cu(115) surface has been investigated in the temperature range between 160 and 700 K with energy-resolved helium-atom-beam scattering. The ''power-law'' diffraction pro tiles found in previous helium-scattering experiments without energy analysis are shown to be the result of inelastic (phonon) scattering. In our energy-resolved measurements, the line shapes of the elastically scattered intensity can be described by a two-dimensional Lorentzian. This asserts that on this surface a possible crossover of the height difference correlation function to the expected logarithmic behavior might only occur for distances larger than about 100 Angstrom (perpendicular to the average step direction).

引用

页码：8461 / 8470

页数：10

共 34 条

[1] THERMAL ROUGHNESS OF A CLOSE-PACKED METAL-SURFACE - PT(001) [J].