Recent advances in strong field magneto-transport in a composite medium
Identifieur interne : 002967 ( Istex/Corpus ); précédent : 002966; suivant : 002968Recent advances in strong field magneto-transport in a composite medium
Auteurs : David J. Bergman ; Yakov M. Strelniker ; Andrey K. SarychevSource :
- Physica A: Statistical Mechanics and its Applications [ 0378-4371 ] ; 1997.
Abstract
Macroscopic inhomogeneities have a profound effect on electrical conductivity in the presence of a strong magnetic field B. One expression of this is the appearance of a new physical length in the system, which increases with B and is unbounded. This length characterizes the extra distortions of the local current density which are produced by the strong Hall effect. In fractal clusters, different scaling behavior is found to occur at scales above and below this length. In random percolating systems, the new length competes with the percolation correlation length for dominance over the critical behavior. The divergence of each of these lengths is associated with a different fixed point. In metallic composites with a periodic microstructure, the new length is responsible for a strong anisotropy which appears in the magneto-resistance, even when the rotational symmetry is simple cubic or simple square.
Url:
DOI: 10.1016/S0378-4371(97)00095-2
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One expression of this is the appearance of a new physical length in the system, which increases with B and is unbounded. This length characterizes the extra distortions of the local current density which are produced by the strong Hall effect. In fractal clusters, different scaling behavior is found to occur at scales above and below this length. In random percolating systems, the new length competes with the percolation correlation length for dominance over the critical behavior. The divergence of each of these lengths is associated with a different fixed point. In metallic composites with a periodic microstructure, the new length is responsible for a strong anisotropy which appears in the magneto-resistance, even when the rotational symmetry is simple cubic or simple square.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>David J. 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Fax: 97236422979</p></note><affiliation>School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel</affiliation></author><author><persName><forename type="first">Yakov M.</forename><surname>Strelniker</surname></persName><affiliation>School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel</affiliation></author><author><persName><forename type="first">Andrey K.</forename><surname>Sarychev</surname></persName><affiliation>Scientific Centre of Applied Problems in Electrodynamics, Russian Academy of Sciences, Izhorskaya 13/19, Moscow 127412, Russia</affiliation></author></analytic><monogr><title level="j">Physica A: Statistical Mechanics and its Applications</title><title level="j" type="abbrev">PHYSA</title><idno type="pISSN">0378-4371</idno><idno type="PII">S0378-4371(00)X0059-3</idno><meeting><addName>Proceedings of the Fourth International Conference on Electrical Transport and Optical Properties of Inhomogeneoous Media, Russia</addName><addName>ETOPIM4</addName><date>19960723</date><date>19960730</date></meeting><editor><persName>A.M. 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In metallic composites with a periodic microstructure, the new length is responsible for a strong anisotropy which appears in the magneto-resistance, even when the rotational symmetry is simple cubic or simple square.</p></abstract><textClass><keywords scheme="keyword"><list><head>PACS</head><item><term>72.15.Gd</term></item><item><term>05.70.Jk</term></item></list></keywords></textClass><textClass><keywords scheme="keyword"><list><head>Keywords</head><item><term>Optics</term></item><item><term>Microwaves</term></item><item><term>Dielectric constant</term></item><item><term>Percolation</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1997">Published</change></revisionDesc></teiHeader></istex:fulltextTEI></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>PHYSA</jid><aid>97000952</aid><ce:pii>S0378-4371(97)00095-2</ce:pii><ce:doi>10.1016/S0378-4371(97)00095-2</ce:doi><ce:copyright type="unknown" year="1997"></ce:copyright></item-info><head><ce:dochead><ce:textfn>Electrical properties of inhomogeneous media</ce:textfn></ce:dochead><ce:title>Recent advances in strong field magneto-transport in a composite medium</ce:title><ce:author-group><ce:author><ce:given-name>David J.</ce:given-name><ce:surname>Bergman</ce:surname><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref><ce:e-address>bergman@post.tau.ac.il</ce:e-address></ce:author><ce:author><ce:given-name>Yakov M.</ce:given-name><ce:surname>Strelniker</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Andrey K.</ce:given-name><ce:surname>Sarychev</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Scientific Centre of Applied Problems in Electrodynamics, Russian Academy of Sciences, Izhorskaya 13/19, Moscow 127412, Russia</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Corresponding author. Fax: 97236422979</ce:text></ce:correspondence></ce:author-group><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Macroscopic inhomogeneities have a profound effect on electrical conductivity in the presence of a strong magnetic field <ce:bold>B</ce:bold>. One expression of this is the appearance of a new physical length in the system, which increases with <ce:bold>B</ce:bold> and is unbounded. This length characterizes the extra distortions of the local current density which are produced by the strong Hall effect. In fractal clusters, different scaling behavior is found to occur at scales above and below this length. In random percolating systems, the new length competes with the percolation correlation length for dominance over the critical behavior. The divergence of each of these lengths is associated with a different fixed point. 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