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The European Physical Journal E

, Volume 31, Issue 2, pp 153–157 | Cite as

Giant magnetoresistance of coiling polymers

  • J. Um
  • J. Yi
  • B. J. Kim
Regular Article

Abstract

We examine the magnetoresistance (MR) of conducting polymers with interest paid on the role of structural flexibility. Through Monte Carlo simulation and Green function method, we evaluate the electric transmission for a variety of polymer configurations. It is found that for a single polymer the transmission displays a complex oscillation and also a parity-dependent periodicity. For an ensemble of polymers the averaged transmission yields the nonlinear behavior of MR under varying magnetic fields. Interestingly, more flexible polymers are shown to achieve higher MR, depending on the population and the size of the loops.

Keywords

Polyaniline Green Function Single Loop Persistence Length Monte Carlo Step 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Department of PhysicsPusan National UniversityBusanKorea
  2. 2.BK21 Physics Research Division and Department of Energy ScienceSungkyunkwan UniversitySuwonKorea

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