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描述了用低能电子衍射(LEED)研究不同温度下在Si(100)-c(8×8)表面吸氢引起的一系列相变过程。实验发现:在液氮温度下,在Si(100)-c(8×8)表面连续吸氢将引起表面经Si(100)-(4×1)-H向(2×1)-H最终向(1×1)-H转变;而在从700℃到室温间的不同温度下饱和吸氢,实验中观察到:Si(100)-c(8×8)表面将先转变至Si(100)-c(4×4)-H,然后至(2×1)-最终至(1×1)-H。
Describes a series of phase transitions induced by hydrogen uptake on Si (100) -c (8 × 8) surfaces at different temperatures using low energy electron diffraction (LEED). It was found that continuous hydrogen absorption on the Si (100) -c (8 × 8) surface at the liquid nitrogen temperature will eventually lead to a Si (100) - (4 × 1) -H to (2 × 1) -H surface (1 × 1) -H transition; and from 700 ℃ to room temperature under different temperatures saturated hydrogen absorption experiment was observed: Si (100) -c (8 × 8) surface will first change to Si (100 ) -c (4 × 4) -H, then to (2 × 1) - finally to (1 × 1) -H.