Gupta, Das K and Sambandamurthy, G and Chandrasekhar, N (2000) Magnetoresistance and conductivity exponents of quench-condensed ultra-thin films of Bi. In: Physica B: Condensed Matter, 284-28 (2). pp. 1976-1977.
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Abstract
We have studied the magnetoresistance (MR) and evolution of conductivity with thickness of quench-condensed bismuth films on substrates of various dielectric constants. Our results indicate a negative initial MR proportional to the square of the magnetic field. The conductance shows a power law kind of dependence on thickness, with an exponent close to 1.33, characteristic of a 2-D percolating system, only when the films are grown on a thin $(\sim 10 \AA)$ germanium underlayer but not otherwise.
Item Type: | Journal Article |
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Publication: | Physica B: Condensed Matter |
Publisher: | Elsevier |
Additional Information: | Copyright of this article belongs to Elsevier. |
Keywords: | Conductivity exponent;Magnetoresistance;Quench-condensed Bi films |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 07 Aug 2007 |
Last Modified: | 19 Sep 2010 04:36 |
URI: | http://eprints.iisc.ac.in/id/eprint/10400 |
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