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Topological structural vortices in multiferroic hexagonal manganites

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TitleInfo
Title
Topological structural vortices in multiferroic hexagonal manganites
Name (type = personal)
NamePart (type = family)
Wang
NamePart (type = given)
Xueyun
NamePart (type = date)
1987-
DisplayForm
Xueyun Wang
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Cheong
NamePart (type = given)
Sang-Wook
DisplayForm
Sang-Wook Cheong
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Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Baker
NamePart (type = given)
Andrew J.
DisplayForm
Andrew J. Baker
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Yuzbashyan
NamePart (type = given)
Emil
DisplayForm
Emil Yuzbashyan
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Kiryukhin
NamePart (type = given)
Valery
DisplayForm
Valery Kiryukhin
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Sirenko
NamePart (type = given)
Andrei
DisplayForm
Andrei Sirenko
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2015
DateOther (qualifier = exact); (type = degree)
2015-05
CopyrightDate (encoding = w3cdtf); (qualifier = exact)
2015
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
This dissertation seeks to understand ferroelectric domains, which can be viewed as networks of topological structural vortices, in a new class of materials called multiferroic hexagonal manganites RMnO3 (h-RMnO3) with R = rare earths, Y, In and Sc. From an experimental standpoint with solid theoretical background, we will briefly introduce improper ferroelectricity and topological defects in general in chapter 1. Then we start our discussion by reviewing the origin of the topological defect (vortex) in multiferroic material (h-RMnO3) and its self-organized domain network, which will act to motivate the work. We will also discuss the origin of self electric poling effect, self-organized criticality (SOC), and a rare phenomenon - vortex core fragmentation in chapter 2. This will be followed by chapter 3 which mainly discusses the manipulation of topological vortex by applying an external shear strain. The force on vortices in h-RMnO3 generated by shear strain is analogous to the Magnus force that moves superfluid vortices in the direction transverse to the superfluid current. Chapter 4 starts with a brief introduction to the Kibble-Zurek Mechanism (KZM), which is the theoretical background of the connection between cosmology and condensed matter physics. It turns out that multiferroic h-RMnO3 is an excellent test bed for KZM through the study of defect formation, emergent continuous symmetry, and Higgs condensation of the disorder field. In the remaining chapter, we extend our scope from the standard vortex to its "dual description" --partially undistorted antipolar (PUA) vortex. Then we will end this dissertation with a summary of the results and future research directions, which actually open a new path to understand the fundamental properties of this new class of materials.
Subject (authority = RUETD)
Topic
Physics and Astronomy
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_6221
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xxii, 138 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Ferroelectricity
Note (type = statement of responsibility)
by Xueyun Wang
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T33N257J
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
Wang
GivenName
Xueyun
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2015-03-29 23:39:15
AssociatedEntity
Name
Xueyun Wang
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.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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RULTechMD (ID = TECHNICAL1)
ContentModel
ETD
OperatingSystem (VERSION = 5.1)
windows xp
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