Volume 45, Number 5, March I 1999
|Page(s)||605 - 618|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Phase-transition–like behavior of strong-field classical magnetotransport in a composite medium with a periodic columnar microstructure
School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences
Tel Aviv University, Tel Aviv 69978, Israel
Accepted: 23 December 1998
A phase-transition–like change from saturating to non-saturating behavior is found in the longitudinal bulk effective magnetoresistivity along some fixed directions of a two-dimensional periodic array of long, parallel, perfectly insulating inclusions embedded in a simple, free-electron conducting host. Near the transition, exhibits scaling behavior, with a scaling variable that is the ratio of two physical lengths which are tending to 0. At the transition, the local current is constrained to flow in some very narrow boundary layers.
PACS: 73.50.Jt – Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects) / 72.80.Tm – Composite materials / 68.35.Rh – Phase transitions and critical phenomena
© EDP Sciences, 1999
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