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In this work, we employ the Si(7 7 10) regular stepped surface as model system to study the triple steps by scanning tunneling microscopy (STM) and large-scale first-principles calculations. We find a surprising cohabitation of reconstruction elements at the step edge that either buckles statically or dynamically at room temperature. The driving force for the observed sequence of buckling patterns is traced back to Coulomb interactions involving charged adatoms and rest-atoms lying on a mini-terrace. These results reconcile the Si(111) triple step model with the experimental STM data.<\/jats:p>","DOI":"10.1063\/1.4900783","type":"journal-article","created":{"date-parts":[[2014,10,30]],"date-time":"2014-10-30T00:30:39Z","timestamp":1414629039000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Static and dynamic buckling of reconstructions at triple steps on Si(111) surfaces"],"prefix":"10.1063","volume":"105","author":[{"given":"R.","family":"Zhachuk","sequence":"first","affiliation":[{"name":"Institute of Semiconductor Physics 1 , pr. Lavrentyeva 13, Novosibirsk 630090, Russia"}]},{"given":"S.","family":"Teys","sequence":"additional","affiliation":[{"name":"Institute of Semiconductor Physics 1 , pr. 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