dc.identifier.uri |
http://dx.doi.org/10.15488/1909 |
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dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/1934 |
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dc.contributor.author |
Czubanowski, Marcin
|
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dc.contributor.author |
Schuster, Annemarie
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|
dc.contributor.author |
Pfnür, Herbert
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dc.contributor.author |
Tegenkamp, Christoph
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dc.date.accessioned |
2017-09-14T10:52:24Z |
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dc.date.available |
2017-09-14T10:52:24Z |
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dc.date.issued |
2008 |
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dc.identifier.citation |
Czubanowski, M.; Schuster, A.; Pfnür, H.; Tegenkamp, C.: Temperature-driven refacetting phase transition in Pb chains on Si(557). In: Physical Review B - Condensed Matter and Materials Physics 77 (2008), Nr. 17, 174108. DOI: https://doi.org/10.1103/PhysRevB.77.174108 |
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dc.description.abstract |
By using quantitative low energy electron diffraction, we have studied the temperature-driven phase transition of Pb chains grown on Si(557) substrates at a surface concentration of 1.3 ML. This concentration, which is still below one physical monolayer, exhibits a unique switching of electrical conductance from one dimensional to two dimensional above 78 K, which is coupled to this phase transition, and was investigated for this reason. Annealing to 640 K causes a concentration-driven refacetting of the whole surface into large (223) facets at low temperatures, while along the chains a so-called (1,5) linear phase is formed, causing a tenfold periodicity. At Tc=78 K, we analyze a temperature-driven order-order transition along the [¯1¯12] direction in detail, which again turns out to be a refacetting transition. The two-dimensional character of this transition was seen by corresponding structural changes along the [1¯10] direction as well. Refacetting causes a change in periodicity and destroys the conditions of Fermi nesting necessary for one-dimensional conductance. © 2008 The American Physical Society. |
eng |
dc.description.sponsorship |
DFG |
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dc.language.iso |
eng |
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dc.publisher |
College Park, MD : American Physical Society |
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dc.relation.ispartofseries |
Physical Review B 77 (2008), Nr. 17 |
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dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
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dc.subject.ddc |
530 | Physik
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ger |
dc.title |
Temperature-driven refacetting phase transition in Pb chains on Si(557) |
eng |
dc.type |
Article |
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dc.type |
Text |
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dc.relation.issn |
10980121 |
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dc.relation.doi |
https://doi.org/10.1103/PhysRevB.77.174108 |
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dc.bibliographicCitation.issue |
17 |
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dc.bibliographicCitation.volume |
77 |
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dc.bibliographicCitation.firstPage |
174108 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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