Cu(110) 표면에 Ar+ 이온의 충돌 효과 = Effect of Ar+ ion bombardment on the morphology of Cu(110)

다국어 초록 (Multilingual Abstract)

Ar+ion bombardment and annealing of the Cu(110) surface have been studied by using re ectance
dierence spectroscopy (RDS) and scanning tunneling microscopy (STM). Ion bombardment of the
Cu(110) sample at 350 K and 45 K totally destroys extended terraces and leaves behind a rough surface covered with small clusters. The RDS signal at 2.1 eV is completely quenched whereas the position of the 4.38-eV peak shifts to higher energy upon sputtering. This shift can be related to the density of the vacancies in the subsurface region. The RDS signal at 2.1 eV shows no change until the annealing temperature reaches 250 K. At this temperature, the STM images reveal the formation of small terraces on the Cu(110) surface. In contrast, the recovery of the 4.3-eV peak exhibits a threshold temperature as high as 600 K. This evidence suggests that two different mechanisms are responsible for the variations of the RDS signals at 2.1 eV and 4.3 eV, respectively.

참고문헌 (Reference)

1 M.W. Thompson, "Defects and Radiation Damage inMetals" Cambridge University Press 322-, 1969