Tunneling images of the 5 x 5 surface reconstruction on Ge-Si(111).
Tunneling images of the 5 x 5 surface reconstruction on Ge-Si(111).
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Ge-Si(111) 上 5 x 5 表面重建的隧道图像。
DOI：
10.1103/physrevb.32.8455
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
Swartzentruber
中科院分区：
文献类型：
--
作者：
Becker;Golovchenko;Swartzentruber
锗硅合金可以在晶体硅（111）衬底上制备，并观察到具有5× 5表面重构。我们给出了该表面的隧穿图像，这表明它与Si（111）7× 7重构有很强的相似性。与Takayanagi，Ytaniahiro和小林提出的模型相关的模型解释了所观察到的重建的一般特征。此外，观察到的表面具有周期性的垂直调制，这表明一个有序的Ge-Si表面合金。
Germanium-silicon alloys can be prepared on crystalline silicon (111) substrates and have been observed to have 5× 5 surface reconstructions. We present tunneling images of this surface which show that is has strong similarities to the Si (111) 7× 7 reconstruction. A model related to that proposed by Takayanagi, Ytaniahiro, and Kobayashi accounts for the general features of the observed reconstruction. In addition the surface is observed to have periodic vertical modulations which indicate an ordered Ge-Si surface alloy.