Macroscopic quantum tunneling in nanoelectromechanical systems

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSillanpää, Mika A.
dc.contributor.authorKhan, Raphaël
dc.contributor.authorHeikkilä, Tero T.
dc.contributor.authorHakonen, Pertti J.
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-06-03T09:00:59Z
dc.date.available2015-06-03T09:00:59Z
dc.date.issued2011
dc.description.abstractThe experimental observation of quantum phenomena in mechanical degrees of freedom is difficult, as the systems become linear toward low energies and the quantum limit, and thus reside in the correspondence limit. Here we investigate how to access quantum phenomena in flexural nanomechanical systems which are strongly deflected by a voltage. Near a metastable point one can achieve a significant nonlinearity in the electromechanical potential at the scale of zero-point energy. The system can then escape from the metastable state via macroscopic quantum tunneling (MQT). We consider two model systems suspended atop a voltage gate, namely, a graphene sheet and a carbon nanotube. We find that the experimental demonstration of the phenomenon is currently possible but demanding, since the MQT crossover temperatures fall in the milli-Kelvin range. A carbon nanotube is suggested as the most promising system.en
dc.description.versionPeer revieweden
dc.format.extent195433/1-7
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSillanpää, Mika A. & Khan, Raphaël & Heikkilä, Tero T. & Hakonen, Pertti J.. 2011. Macroscopic quantum tunneling in nanoelectromechanical systems. Physical Review B. Volume 84, Issue 19. 195433/1-7. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.84.195433.en
dc.identifier.doi10.1103/physrevb.84.195433
dc.identifier.issn1098-0121 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/16504
dc.identifier.urnURN:NBN:fi:aalto-201506033072
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseriesVolume 84, Issue 19
dc.rights© 2011 American Physical Society (APS). This is the accepted version of the following article: Sillanpää, Mika A. & Khan, Raphaël & Heikkilä, Tero T. & Hakonen, Pertti J.. 2011. Macroscopic quantum tunneling in nanoelectromechanical systems. Physical Review B. Volume 84, Issue 19. 195433/1-7. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.84.195433, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.84.195433.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordquantum phenomenasen
dc.subject.keywordgrapheneen
dc.subject.keywordcarbon nanotubesen
dc.subject.otherPhysicsen
dc.titleMacroscopic quantum tunneling in nanoelectromechanical systemsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
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