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Adsorption of Na on the GaAs(110) Surface Studied by the Field-Ion-Scanning-Tunneling-Microscopy
| Content Provider | Scilit |
|---|---|
| Author | Bai, Chunli Hashizume, Tomihiro Jeon, Dong-Ryul Jeon Dong-Ryul Sakurai, Toshio Sakurai Toshio |
| Copyright Year | 1992 |
| Description | Journal: Japanese Journal of Applied Physics The geometry and the coverage-dependent growth structures formed by Na deposition on the GaAs(110) surface at room temperature were studied using a field-ion scanning tunneling microscope. When the coverage is low, Na adatoms reside on the bridge site encompassing one Ga and two As surface atoms to form linear chains along the [11̄0] direction. The Na-Na nearest-neighbor distance in this low-density chain structure is 8 Å. At slightly increased coverage, the Na chains began to disorder. Some of them were packed closer to form domains showing a local 2×2 structure. None of high-density two dimensional ordered structures or low-density zigzag chains was observed, in contrast to the Cs/GaAs(110) system. Additional Na adsorption resulted in the formation of three-dimensional disordered clusters. The saturation coverage of Na was determined to be ∼0.1 ML (1 ML≡2 Na per substrate unit cell). |
| Related Links | http://iopscience.iop.org/article/10.1143/JJAP.31.L1117/pdf |
| ISSN | 00214922 |
| e-ISSN | 13474065 |
| DOI | 10.1143/jjap.31.l1117 |
| Journal | Japanese Journal of Applied Physics |
| Issue Number | 8A |
| Volume Number | 31 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1992-08-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Japanese Journal of Applied Physics Three Dimensional Room Temperature Alkali Metal Nearest Neighbor Scanning Tunneling Microscope Scanning Tunneling Microscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Engineering |
