Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface (Articolo in rivista)

Type
Label
  • Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1038/NMAT3836 (literal)
Alternative label
  • Langer, Markus; Kisiel, Marcin; Pawlak, Remy; Pellegrini, Franco; Santoro, Giuseppe E.; Buzio, Renato; Gerbi, Andrea; Balakrishnan, Geetha; Baratoff, Alexis; Tosatti, Erio; Meyer, Ernst (2014)
    Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface
    in Nature materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Langer, Markus; Kisiel, Marcin; Pawlak, Remy; Pellegrini, Franco; Santoro, Giuseppe E.; Buzio, Renato; Gerbi, Andrea; Balakrishnan, Geetha; Baratoff, Alexis; Tosatti, Erio; Meyer, Ernst (literal)
Pagina inizio
  • 173 (literal)
Pagina fine
  • 177 (literal)
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  • 13 (literal)
Rivista
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  • 5 (literal)
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  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • University of Basel; International School for Advanced Studies; CNR IOM Democritos Natl Simulat Ctr; Abdus Salam International Centre for Theoretical Physics; CNR SPIN Inst Superconduct Innovat Mat & Devices; University of Warwick (literal)
Titolo
  • Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface (literal)
Abstract
  • Understanding nanoscale friction and dissipation is central to nanotechnology(1-4). The recent detection of the electronicfriction drop caused by the onset of superconductivity in Nb (ref. 5) by means of an ultrasensitive non-contact pendulum atomic force microscope (AFM) raised hopes that a wider variety of mechanical-dissipation mechanisms become accessible. Here, we report a multiplet of AFM dissipation peaks arising a few nanometres above the surface of NbSe2-a layered compound exhibiting an incommensurate chargedensity wave (CDW). Each peak appears at a well-defined tip-surface interaction force of the order of a nanonewton, and persists up to 70 K, where the short-range order of CDWs is known to disappear. Comparison of the measurements with a theoretical model suggests that the peaks are associated with local, tip-induced 2 pi phase slips of the CDW, and that dissipation maxima arise from hysteretic behaviour of the CDW phase as the tip oscillates at specific distances where sharp local slips occur. (literal)
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