Thermal rectification and negative differential thermal resistance in a driven two segment classical Heisenberg chain
نویسندگان
چکیده
منابع مشابه
Thermal rectification and negative differential thermal resistance in a driven two segment classical Heisenberg chain.
Using computer simulation we investigate thermal transport in a two segment classical Heisenberg spin chain with nearest neighbor interaction and in the presence of an external magnetic field. The system is thermally driven by heat baths attached at the two ends and transport properties are studied using energy conserving dynamics. We demonstrate that by properly tuning the parameters thermal r...
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An extensive study of the one-dimensional two-segment Frenkel-Kontorova (FK) model reveals a transition from the counterintuitive existence to the ordinary nonexistence of a negative-differential-thermal-resistance (NDTR) regime, when the system size or the intersegment coupling constant increases to a critical value. A "phase" diagram which depicts the relevant conditions for the exhibition of...
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Thermal rectifiers whose forward heat fluxes are greater than reverse counterparts have been extensively studied. Here we have discovered, idealized, and derived the ultimate limit of such rectification ratios, which are partially validated by numerical simulations, experiments, and micro-scale Hamiltonian-oscillator analyses. For rectifiers whose thermal conductivities (κ) are linear with the ...
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ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2013
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/25/49/496006