Abstract
We have studied the adsorption of H2 on Ni(110) using LEED, work function, and flash desorption measurements. At low temperature (< 170 K) the interaction gives a surface structure that has not been observed in previous work. Low-temperature LEED patterns consisted of dim (2×1) half-order spots which diminished in intensity with exposure as a much brighter (1×2) spot pattern appeared. Flash desorption showed two pressure bursts and gave a ratio of about 3:4 for the amount of hydrogen involved in the completed (2×1) and (1×2) structures, respectively. Heating the crystal to ∼ 220 K produced a streaky (1×2) pattern. The saturated work function increase below 170 K was 0.58 eV regardless of the pattern observed. The (2×1) and (1×2) structures are interpreted via an undistorted and distorted substrate layer, respectively.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
