eprintid: 16199 rev_number: 16 userid: 1291 dir: disk0/00/01/61/99 datestamp: 2012-11-12 15:12:04 lastmod: 2019-02-02 15:56:12 status_changed: 2012-11-12 15:12:04 type: article metadata_visibility: show item_issues_count: 0 eprint_status: archive creators_name: Shen, TC creators_name: Steckel, JA creators_name: Jordan, KD creators_email: creators_email: creators_email: jordan@pitt.edu creators_id: creators_id: creators_id: JORDAN title: Electron-stimulated bond rearrangements on the H/Si(100)-3×1 surface ispublished: pub divisions: sch_as_chemistry full_text_status: public abstract: Rearrangements of the Si(100)-3×1:H surface induced by an STM tip at a positive sample bias are examined. Emphasis is placed on local 3×1→2×1 restructuring of the surface following the loss of two H atoms. The H-atom desorption yield from monohydride sites of the 3×1 surface and the 3×1→2×1 transition yield induced by electronic excitation are presented. Based on electronic structure calculations, it is estimated that the 3×1→2×1 rearrangement process has overall barriers ranging from 0.1 to 1.6 eV, depending on the sites from which the H atoms are lost. It is proposed that STM-induced vibrational excitation of surface bonds provides the energy for surmounting the rearrangement barriers. date: 2000-02-10 date_type: published publication: Surface Science volume: 446 number: 3 pagerange: 211 - 218 refereed: TRUE issn: 0039-6028 id_number: 10.1016/S0039-6028(99)01147-4 citation: Shen, TC and Steckel, JA and Jordan, KD (2000) Electron-stimulated bond rearrangements on the H/Si(100)-3×1 surface. Surface Science, 446 (3). 211 - 218. ISSN 0039-6028 document_url: http://d-scholarship-dev.library.pitt.edu/16199/1/licence.txt