Recent advances in strong field magneto-transport in a composite medium
Identifieur interne : 002368 ( Main/Exploration ); précédent : 002367; suivant : 002369Recent advances in strong field magneto-transport in a composite medium
Auteurs : David J. Bergman [Israël] ; Yakov M. Strelniker [Israël] ; Andrey K. Sarychev [Russie]Source :
- 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.
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DOI: 10.1016/S0378-4371(97)00095-2
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Sarychev</name><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Scientific Centre of Applied Problems in Electrodynamics, Russian Academy of Sciences, Izhorskaya 13/19, Moscow 127412</wicri:regionArea><placeName><settlement type="city">Moscou</settlement><region>District fédéral central</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Physica A: Statistical Mechanics and its Applications</title><title level="j" type="abbrev">PHYSA</title><idno type="ISSN">0378-4371</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1997">1997</date><biblScope unit="volume">241</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="278">278</biblScope><biblScope unit="page" to="283">283</biblScope></imprint><idno type="ISSN">0378-4371</idno></series><idno type="istex">C3CA84A12BBC60A545FE0FDCB0C7CA2169E682A6</idno><idno type="DOI">10.1016/S0378-4371(97)00095-2</idno><idno type="PII">S0378-4371(97)00095-2</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0378-4371</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">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.</div></front></TEI><affiliations><list><country><li>Israël</li><li>Russie</li></country><region><li>District fédéral central</li></region><settlement><li>Moscou</li></settlement></list><tree><country name="Israël"><noRegion><name sortKey="Bergman, David J" sort="Bergman, David J" uniqKey="Bergman D" first="David J." last="Bergman">David J. Bergman</name></noRegion><name sortKey="Bergman, David J" sort="Bergman, David J" uniqKey="Bergman D" first="David J." last="Bergman">David J. Bergman</name><name sortKey="Strelniker, Yakov M" sort="Strelniker, Yakov M" uniqKey="Strelniker Y" first="Yakov M." last="Strelniker">Yakov M. Strelniker</name></country><country name="Russie"><region name="District fédéral central"><name sortKey="Sarychev, Andrey K" sort="Sarychev, Andrey K" uniqKey="Sarychev A" first="Andrey K." last="Sarychev">Andrey K. Sarychev</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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