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The interaction of potassium with oxygen on graphite as studied by high-resolution electron energy loss spectroscopy and thermal desorption spectroscopy
| Content Provider | Scilit |
|---|---|
| Author | Chakarov, D. V. Sjovall, P. Kasemo, B. |
| Copyright Year | 1993 |
| Description | Journal: Journal of Physics: Condensed Matter High-resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS) are employed to study the interaction between oxygen and potassium on graphite in the coverage range up to 2.5 monolayers and in the temperature range 160-800 K. Annealing gives rise to a succession of different $KO_{x}$ complexes, partially induced by surface segregation of intercalated potassium. A vibrational excitation at 39 meV is attributed to $K_{2}$O formation, in agreement with a recent interpretation of XPS and HREELS spectra of oxidized single-crystal potassium. Two vibrational excitations at 30-31 meV and 180 meV are tentatively attributed to either $KO_{2}$ or $K_{2}O_{2}$. A high-temperature complex, which is an unidentified precursor to $CO_{2}$ formation/desorption, has a single electron energy loss at 27 meV. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-8984/5/18/012/pdf |
| Ending Page | 2912 |
| Page Count | 10 |
| Starting Page | 2903 |
| ISSN | 09538984 |
| e-ISSN | 1361648X |
| DOI | 10.1088/0953-8984/5/18/012 |
| Journal | Journal of Physics: Condensed Matter |
| Issue Number | 18 |
| Volume Number | 5 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1993-05-03 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Condensed Matter Physical Chemistry Loss Spectroscopy Electron Energy Loss High Resolution Electron Oxygen and Potassium |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
