Related papers: Thermoelectric phenomena in an antiferromagnetic helix: Role of electric field

Thermoelectric phenomena in an antiferromagnetic helix: Role of electric field

URL: http://arxiv.org/abs/2305.05582v1
Date: Tue, 9 May 2023 16:15:45 GMT
Title: Thermoelectric phenomena in an antiferromagnetic helix: Role of electric field
Authors: Kallol Mondal, Sudin Ganguly, and Santanu K. Maiti
Abstract summary: The charge and spin-dependent thermoelectric responses are investigated on a single-helical molecule possessing a collinear antiferromagnetic spin arrangement. A non-equilibrium Green's function formalism is employed to study the thermoelectric phenomena. The present proposition shows a favorable spin-dependent thermoelectric response compared to the charge counterpart.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The charge and spin-dependent thermoelectric responses are investigated on a single-helical molecule possessing a collinear antiferromagnetic spin arrangement with zero net magnetization in the presence of a transverse electric field. Both the short and long-range hopping scenarios are considered, which mimic biological systems like single-stranded DNA and $\alpha$-protein molecules. A non-equilibrium Green's function formalism is employed following the Landauer-Buttiker prescription to study the thermoelectric phenomena. The detailed dependence of the basic thermoelectric quantities on helicity, electric field, temperature etc., are elaborated on, and the underlying physics is explained accordingly. The charge and spin \textit{figure of merits} are computed and compared critically. For a more accurate estimation, the phononic contribution towards thermal conductance is also included. The present proposition shows a favorable spin-dependent thermoelectric response compared to the charge counterpart.

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