Shared more. Cited more. Safe forever.
    • advanced search
    • submit works
    • about
    • help
    • contact us
    • login
    View Item 
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate Studies - Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2011 Dissertations (MU)
    • 2011 MU dissertations - Freely available online
    • View Item
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate Studies - Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2011 Dissertations (MU)
    • 2011 MU dissertations - Freely available online
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    advanced searchsubmit worksabouthelpcontact us

    Browse

    All of MOspaceCommunities & CollectionsDate IssuedAuthorAuthor/ContributorTitleSubjectIdentifierThesis DepartmentThesis AdvisorThesis SemesterThis CollectionDate IssuedAuthorAuthor/ContributorTitleSubjectIdentifierThesis DepartmentThesis AdvisorThesis Semester

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular AuthorsStatistics by Referrer

    Percolative effects in quantum critical systems: how magnetic clusters shape the response at low temperatures

    Gaddy, John
    View/Open
    [PDF] public.pdf (219.5Kb)
    [PDF] research.pdf (9.362Mb)
    [PDF] short.pdf (6.763Kb)
    Date
    2011
    Format
    Thesis
    Metadata
    [+] Show full item record
    Abstract
    We have investigated the link between cluster morphology and non-Fermi liquid behavior in the bulk properties of Ce(Ru1-xFex)2Ge2, a prototypical quantum critical system that has been driven to criticality through chemical doping. The compound Ce(Ru1-xFex)2Ge2 is on the verge of magnetic ordering as the temperature is decreased to zero Kelvin, at which point quantum fluctuations keep the system in the disordered phase. This region is marked by quantum critical phenomena such as dynamical E/T-scaling, as well as by the formation of magnetic clusters which are an inescapable by-product of chemical doping. Since cluster formation in classical systems such as insulating LiY[Mn2-XLiX]O4 has been shown by us to mimic dynamical scaling laws, we have studied the link between cluster morphology and the specific heat in Ce(Ru1-xFex)2Ge2. Using a set of reasonable assumptions, we show that the characteristic low-temperature dependence of the specific heat in this quantum critical system is strongly influenced by the formation of magnetic clusters, to the point that cluster formation might well account for some of the more prominent discrepancies that have emerged between the experimental systems being investigated and the idealized systems on which theoretical scenarios are based.
    URI
    http://hdl.handle.net/10355/14400
    Degree
    Ph. D.
    Thesis Department
    Physics (MU)
    Collections
    • Physics and Astronomy electronic theses and dissertations (MU)
    • 2011 MU dissertations - Freely available online

    Send Feedback
    hosted by University of Missouri Library Systems
     

     


    Send Feedback
    hosted by University of Missouri Library Systems