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Raman scattering from layered superconductors

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TypeOfResource
Text
TitleInfo (ID = T-1)
Title
Raman scattering from layered superconductors
SubTitle
effects of charge ordering, two-band superconductivity, and structural disorder
Identifier
ETD_3000
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056581
Language
LanguageTerm (authority = ISO639-2); (type = code)
eng
Genre (authority = marcgt)
theses
Subject (ID = SBJ-1); (authority = RUETD)
Topic
Physics and Astronomy
Subject (ID = SBJ-2); (authority = ETD-LCSH)
Topic
Scattering (Physics)
Subject (ID = SBJ-3); (authority = ETD-LCSH)
Topic
Superconductors
Abstract (type = abstract)
Subject of this dissertation is the investigation with experimental means of how the Raman response of three structurally similar materials - MgB2, NbSe2, and CaC6- is affected by superconductivity (all three), charge ordering (NbSe2), or crystalline order-to-disorder phase transitions (CaC6). Universal characteristics of spectral renormalization pertaining to the superconducting phase transition are observed in all three compounds. Yet, the crystalline and electronic structures are sufficiently distinct, such that specific for each compound characteristics are imposed on this superconductivity-induced renormalization. Consequently, the method of polarized Raman scattering has been used to establish a variety of physical concepts: 1. Multi-band superconductivity in the layered superconductor MgB2 and its primary mediation by the strongly coupled 640 cm-1 E2g phonon. Additionally, it is shown how a Josephson-like coupling of two SC condensates in the reciprocal space is responsible for an exotic collective mode, the Leggett's resonance. 2. The Interplay between the superconducting and the incommensurate charge-density-wave order parameters in NbSe2, which has been found to be consistent with an isotropic multi-band superconductivity scenario. This scenario is proposed in the frame of a picture that involves a combined "superconductivity plus charge-density-wave" order parameter. 3. The Fano-Breit-Wigner line-shape formalism to account for an anti-resonance interference in the low temperature Raman response from NbSe2 in the polarization geometry corresponding to the non-symmetric E2g symmetry channel. 4. Validity of the double resonant Raman scattering picture in the presence of disorder in the graphite intercalation compound CaC6. Simultaneously, it is explored how disorder suppresses superconductivity. To that end, the CaC6 superconducting coherence peak, too, is presented. All these phenomena are manifestations of electron-phonon coupling in solids. It is probed by inelastic light scattering under the specific constraints of respective crystalline symmetries. Each case, therefore, remains intriguingly unique. The experiments have been performed in a state of the art optical laboratory with low temperatures and high magnetic fields infrastructure, of which a detailed account is given.
PhysicalDescription
Form (authority = gmd)
electronic resource
Extent
xxiv, 227 p. : ill.
InternetMediaType
application/pdf
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text/xml
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = vita)
Includes vita
Note (type = statement of responsibility)
by Aleksej Mialitsin
Name (ID = NAME-1); (type = personal)
NamePart (type = family)
Mialitsin
NamePart (type = given)
Aleksej
NamePart (type = date)
1977-
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author
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Aleksej Mialitsin
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Blumberg
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Girsh
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chair
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Advisory Committee
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Girsh Blumberg
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NamePart (type = family)
Williams
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Ted
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internal member
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Advisory Committee
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Ted Williams
Name (ID = NAME-4); (type = personal)
NamePart (type = family)
Chandra
NamePart (type = given)
Premala
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internal member
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Advisory Committee
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Premala Chandra
Name (ID = NAME-5); (type = personal)
NamePart (type = family)
Kiryukhin
NamePart (type = given)
Valery
Role
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internal member
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Advisory Committee
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Valery Kiryukhin
Name (ID = NAME-6); (type = personal)
NamePart (type = family)
Gozar
NamePart (type = given)
Adrian
Role
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outside member
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Advisory Committee
DisplayForm
Adrian Gozar
Name (ID = NAME-1); (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (ID = NAME-2); (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
OriginInfo
DateCreated (qualifier = exact)
2010
DateOther (qualifier = exact); (type = degree)
2010-10
Place
PlaceTerm (type = code)
xx
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
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/T3445M76
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (AUTHORITY = GS); (ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
RightsHolder (ID = PRH-1); (type = personal)
Name
FamilyName
Mialitsin
GivenName
Aleksej
Role
Copyright Holder
RightsEvent (ID = RE-1); (AUTHORITY = rulib)
Type
Permission or license
DateTime
2010-10-08 13:00:23
AssociatedEntity (ID = AE-1); (AUTHORITY = rulib)
Role
Copyright holder
Name
Aleksej Mialitsin
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject (ID = AO-1); (AUTHORITY = rulib)
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.
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Technical

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ETD
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application/pdf
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application/x-tar
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12134400
Checksum (METHOD = SHA1)
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