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Transport and magnetic properties of correlated electron systems

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Title
Transport and magnetic properties of correlated electron systems
Name (type = personal)
NamePart (type = family)
Xu
NamePart (type = given)
Wenhu
NamePart (type = date)
1984-
DisplayForm
Wenhu Xu
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Kotliar
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Gabriel
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Gabriel Kotliar
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Advisory Committee
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chair
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Haule
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Kristjan
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Kristjan Haule
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Advisory Committee
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internal member
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NamePart (type = family)
Wu
NamePart (type = given)
Weida
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Weida Wu
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Moore
NamePart (type = given)
Gregory
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Gregory Moore
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Aron
NamePart (type = given)
Camille
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Camille Aron
Affiliation
Advisory Committee
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outside member
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Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
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NamePart
Graduate School - New Brunswick
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school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2014
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2014-10
CopyrightDate (encoding = w3cdtf)
2014
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
This thesis investigates the transport and magnetic properties of correlated electron systems in the framework of dynamical mean field theory. In Chapter 2, the bad metallic transport in a doped Mott insulator is described by the Boltzmann theory of a hidden Fermi liquid, in which the quasiparticle scattering rate follows quadratic temperature and energy dependence far beyond the canonical Fermi liquid scale TFL. The quasiparticle renormalization is strongly dependent on temperature and energy, giving rise to the non-Fermi liquid transport, such as linear-in-T resistivity. Chapter 3 focuses on the thermoelectric power of correlated metals. The thermoelectric power in the high-frequency limit S* and in the Kelvin formula SK are compared with the transport limit S0. S* and SK can be computed with much less effort than S0. SK captures the contribution from renormalized density of states and is a better approximation of S0 for a strongly correlated metal, while for a weakly correlated metal, when S0 is dominated by the band velocity contribution, S* is a better indicator of S0. In Chapter 4, the phase diagram of a periodic Anderson model with the hybridization strength V as the tuning parameter is studied. The vanishing of the heavy Fermi liquid phase, characterized by a diminishing Fermi liquid scale TFL, is accompanied by the emergence of antiferromagnetic ordering. The dynamic spin susceptibility in the vicinity of magnetic instability indicates a momentum-independent, or localized picture of critical spin fluctuations. Chapter 5 discusses the the colossal Nernst effect and anomalies of the magnetoresistance in correlated semiconductor FeSb2. A phenomenological analysis based on Boltzmann theory suggests that a highly dispersive quasiparticle relaxation time is the key to understand the anomalous transport in FeSb2.
Subject (authority = RUETD)
Topic
Physics and Astronomy
Subject (authority = ETD-LCSH)
Topic
Mean field theory
Subject (authority = ETD-LCSH)
Topic
Fermi liquids
Subject (authority = ETD-LCSH)
Topic
Thermoelectricity
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_5843
PhysicalDescription
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electronic resource
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application/pdf
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text/xml
Extent
1 online resource (xiv, 139 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Wenhu Xu
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/T3833TN6
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Xu
GivenName
Wenhu
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2014-09-29 22:20:42
AssociatedEntity
Name
Wenhu Xu
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2014-10-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2015-05-02
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after May 2nd, 2015.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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ETD
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windows xp
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