Publication: Heat transport and thermal rectification in molecular junctions: a minimal model approach
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2011-09-04
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American Physical Society
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Abstract
Heat conduction properties are investigated in a molecular junction modeled as a two-strand ladder with strongly asymmetric thermal transport pathways. By confining anharmonic contributions to only one of the strands, it is shown that tuning of the interstrand coupling can lead to normal heat transport and to the emergence of a well-defined temperature gradient. More interestingly, thermal rectification is obtained around a critical value of the interstrand interaction and by appropriate asymmetries induced by the coupling to the thermal baths.
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©2011 American Physical Society.
This work was supported by DFG-Projekt CU 44/20-1 Project No. MAT2010-17180 and by the South Korea Ministry of Education, Science and Technology Program “World Class University” under Contract No. R31-2008-000-10100-0. E.D. acknowledges financial support by MEC and the program Flores Valles-UCM. We acknowledge fruitful discussions with H. Sevincli and S. Avdoshenko.