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dc.contributor.advisor Si, Qimiao
dc.creatorZhu, Lijun
dc.date.accessioned 2009-06-04T08:00:07Z
dc.date.available 2009-06-04T08:00:07Z
dc.date.issued 2005
dc.identifier.citation Zhu, Lijun. "Quantum phase transitions in strongly correlated metals." (2005) Diss., Rice University. https://hdl.handle.net/1911/18843.
dc.identifier.urihttps://hdl.handle.net/1911/18843
dc.description.abstract Quantum critical properties of strongly correlated metals in heavy fermion systems are investigated. Based on an extended dynamic mean field theory of the Kondo lattice model, two types of quantum phase transitions are found to exist in these materials: the conventional spin density wave transition and a novel locally critical quantum phase transition where the local dynamics is also critical. The associated quantum impurity model, the Bose-Fermi Kondo model, is extensively studied with an epsilon-expansion renormalization group analysis and a large N method. A local quantum critical point is identified in all these approaches, when the bosonic bath has a sub-ohmic spectrum; the results guarantee that a self-consistent solution of the locally critical type is a robust solution to the Kondo lattice model. Quantum critical properties such as thermodynamics are also theoretically investigated for both pictures. A universally diverging Gruneisen ratio is discovered at any quantum critical point, which can be used to characterize different classes of quantum phase transitions.
dc.format.extent 86 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCondensed matter physics
dc.title Quantum phase transitions in strongly correlated metals
dc.type Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy
dc.identifier.callno THESIS PHYS. 2005 ZHU


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