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dc.contributor.authorKarvonen, Jenni
dc.date.accessioned2009-11-30T13:16:02Z
dc.date.available2009-11-30T13:16:02Z
dc.date.issued2009
dc.identifier.isbn978-951-39-3584-9
dc.identifier.otheroai:jykdok.linneanet.fi:1115579
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/22473
dc.description.abstractIn this thesis thermal properties of low dimensional structures were experimentally studied at low temperatures with the help of tunnel junction thermometry and the Joule heating technique. The main objects of study were electron-phonon coupling in disordered thin metal films and phonon transport in suspended silicon nitride membranes. Our aim has been to clarify the effect of the phonon dimensionality, i.e. the effect of boundaries to the phonon modes and the transition from 3D to 2D phonons. The dimensionality cross over had not been observed before this work even though it is fabricationally a standard procedure to create the low dimensional environments for nanoscale applications and devices. The main conclusion here is that the nature of thermal phenomena can differ drastically in lower dimensional structures compared to bulk behaviour, and sometimes surprisingly advantageous ways.en
dc.format.extent64 sivua
dc.language.isoeng
dc.publisherUniversity of Jyväskylä
dc.relation.ispartofseriesResearch report / Department of Physics, University of Jyväskylä
dc.relation.isversionofISBN 978-951-39-3583-2
dc.subject.otherthermal relaxation
dc.subject.otherelectron-phonon coupling
dc.subject.otherphonon transport
dc.subject.otherlow dimensional structures
dc.subject.otherSINIS thermometry
dc.titleThermal properties in low dimensional structures below 1 K
dc.typeDiss.fi
dc.identifier.urnURN:ISBN:978-951-39-3584-9
dc.type.dcmitypeTexten
dc.type.ontasotVäitöskirjafi
dc.type.ontasotDoctoral dissertationen
dc.contributor.tiedekuntaMatemaattis-luonnontieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Mathematics and Scienceen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineFysiikkafi
dc.relation.issn0075-465X
dc.relation.numberinseriesno. 8/2009
dc.rights.accesslevelopenAccessfi
dc.subject.ysoThermal relaxation, electron-phonon coupling, phonon transport, low dimensional structures, SINIS thermometry


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