Competing periodicities in fractionally filled one-dimensional bands

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dc.creatorSnijders, P. C.
dc.creatorRogge, S.
dc.creatorWeitering, H. H.
dc.date2005-10-21
dc.date2006-01-23
dc.date.accessioned2026-07-07T06:44:38Z
dc.date.available2026-07-07T06:44:38Z
dc.descriptionWe present a variable temperature Scanning Tunneling Microscopy and Spectroscopy (STM and STS) study of the Si(553)-Au atomic chain reconstruction. This quasi one-dimensional (1D) system undergoes at least two charge density wave (CDW) transitions at low temperature, which can be attributed to electronic instabilities in the fractionally-filled 1D bands of the high-symmetry phase. Upon cooling, Si(553)-Au first undergoes a single-band Peierls distortion, resulting in period doubling along the imaged chains. This Peierls state is ultimately overcome by a competing tripleperiod CDW, which in turn is accompanied by a x2 periodicity in between the chains. These locked-in periodicities indicate small charge transfer between the nearly half-filled and quarter-filled 1D bands. The presence and the mobility of atomic scale dislocations in the x3 CDW state indicates the possibility of manipulating phase solitons carrying a (spin,charge) of (1/2,+-e/3) or (0,+-2e/3).
dc.descriptionsubmitted, accepted for publication in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0510574
dc.identifierhttp://arxiv.org/abs/cond-mat/0510574
dc.identifierPhys. Rev. Lett. 96 (2006) 076801
dc.identifierdoi:10.1103/PhysRevLett.96.076801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102841
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleCompeting periodicities in fractionally filled one-dimensional bands
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