Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling

Jian-Hua Wang; Wei-Ping Xu; Yu-Ying Zhang; Yi-Hang Nie

doi:doi:10.11648/j.ajmp.20140302.12

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Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling

Jian-Hua Wang, Wei-Ping Xu, Yu-Ying Zhang, Yi-Hang Nie

Published in American Journal of Modern Physics (Volume 3, Issue 2)

Received: 19 January 2014 Published: 20 February 2014

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Abstract

Thermoelectric properties of the single molecular magnet coupled to two metal electrodes are investigated theoretically. For the infinite Coulomb interaction the singly-occupied states determine the effective transport channels. At the low temperature the thermopower and the figure of merit present the large values near bonding state level, and for the given temperature the thermopower and the figure of merit are significantly enhanced with coupling intensity decreasing. When Coulomb interaction is finite, the spectra of thermoelectric quantities split into two sets. The peaks of the thermopower and figure of merit corresponding to doubly-occupied transport channels are much larger than unity for the small coupling intensity. These results are useful for understanding and designing highly efficient thermoelectric devices based on molecular magnet.

Published in	American Journal of Modern Physics (Volume 3, Issue 2)
DOI	10.11648/j.ajmp.20140302.12
Page(s)	37-44
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Molecular Magnet, Thermoelectric Effect, Coulomb Blockade

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APA Style

Jian-Hua Wang, Wei-Ping Xu, Yu-Ying Zhang, Yi-Hang Nie. (2014). Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. American Journal of Modern Physics, 3(2), 37-44. https://doi.org/10.11648/j.ajmp.20140302.12

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ACS Style

Jian-Hua Wang; Wei-Ping Xu; Yu-Ying Zhang; Yi-Hang Nie. Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. Am. J. Mod. Phys. 2014, 3(2), 37-44. doi: 10.11648/j.ajmp.20140302.12

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AMA Style

Jian-Hua Wang, Wei-Ping Xu, Yu-Ying Zhang, Yi-Hang Nie. Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. Am J Mod Phys. 2014;3(2):37-44. doi: 10.11648/j.ajmp.20140302.12

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@article{10.11648/j.ajmp.20140302.12,
  author = {Jian-Hua Wang and Wei-Ping Xu and Yu-Ying Zhang and Yi-Hang Nie},
  title = {Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling},
  journal = {American Journal of Modern Physics},
  volume = {3},
  number = {2},
  pages = {37-44},
  doi = {10.11648/j.ajmp.20140302.12},
  url = {https://doi.org/10.11648/j.ajmp.20140302.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmp.20140302.12},
  abstract = {Thermoelectric properties of the single molecular magnet coupled to two metal electrodes are investigated theoretically. For the infinite Coulomb interaction the singly-occupied states determine the effective transport channels. At the low temperature the thermopower and the figure of merit present the large values near bonding state level, and for the given temperature the thermopower and the figure of merit are significantly enhanced with coupling intensity decreasing. When Coulomb interaction is finite, the spectra of thermoelectric quantities split into two sets. The peaks of the thermopower and figure of merit corresponding to doubly-occupied transport channels are much larger than unity for the small coupling intensity. These results are useful for understanding and designing highly efficient thermoelectric devices based on molecular magnet.},
 year = {2014}
}

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TY  - JOUR
T1  - Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling
AU  - Jian-Hua Wang
AU  - Wei-Ping Xu
AU  - Yu-Ying Zhang
AU  - Yi-Hang Nie
Y1  - 2014/02/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ajmp.20140302.12
DO  - 10.11648/j.ajmp.20140302.12
T2  - American Journal of Modern Physics
JF  - American Journal of Modern Physics
JO  - American Journal of Modern Physics
SP  - 37
EP  - 44
PB  - Science Publishing Group
SN  - 2326-8891
UR  - https://doi.org/10.11648/j.ajmp.20140302.12
AB  - Thermoelectric properties of the single molecular magnet coupled to two metal electrodes are investigated theoretically. For the infinite Coulomb interaction the singly-occupied states determine the effective transport channels. At the low temperature the thermopower and the figure of merit present the large values near bonding state level, and for the given temperature the thermopower and the figure of merit are significantly enhanced with coupling intensity decreasing. When Coulomb interaction is finite, the spectra of thermoelectric quantities split into two sets. The peaks of the thermopower and figure of merit corresponding to doubly-occupied transport channels are much larger than unity for the small coupling intensity. These results are useful for understanding and designing highly efficient thermoelectric devices based on molecular magnet.
VL  - 3
IS  - 2
ER  -

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Author Information

Jian-Hua Wang

Institute of Theoretical Physics, Shanxi University, Taiyuan, China
Wei-Ping Xu

Institute of Theoretical Physics, Shanxi University, Taiyuan, China
Yu-Ying Zhang

Department of Physics, Shanxi University, Taiyuan, China
Yi-Hang Nie

Institute of Theoretical Physics, Shanxi University, Taiyuan, China

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Plain Text BibTeX RIS

APA Style

Jian-Hua Wang, Wei-Ping Xu, Yu-Ying Zhang, Yi-Hang Nie. (2014). Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. American Journal of Modern Physics, 3(2), 37-44. https://doi.org/10.11648/j.ajmp.20140302.12

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ACS Style

Jian-Hua Wang; Wei-Ping Xu; Yu-Ying Zhang; Yi-Hang Nie. Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. Am. J. Mod. Phys. 2014, 3(2), 37-44. doi: 10.11648/j.ajmp.20140302.12

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AMA Style

Jian-Hua Wang, Wei-Ping Xu, Yu-Ying Zhang, Yi-Hang Nie. Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling. Am J Mod Phys. 2014;3(2):37-44. doi: 10.11648/j.ajmp.20140302.12

Copy | Download

@article{10.11648/j.ajmp.20140302.12,
  author = {Jian-Hua Wang and Wei-Ping Xu and Yu-Ying Zhang and Yi-Hang Nie},
  title = {Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling},
  journal = {American Journal of Modern Physics},
  volume = {3},
  number = {2},
  pages = {37-44},
  doi = {10.11648/j.ajmp.20140302.12},
  url = {https://doi.org/10.11648/j.ajmp.20140302.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmp.20140302.12},
  abstract = {Thermoelectric properties of the single molecular magnet coupled to two metal electrodes are investigated theoretically. For the infinite Coulomb interaction the singly-occupied states determine the effective transport channels. At the low temperature the thermopower and the figure of merit present the large values near bonding state level, and for the given temperature the thermopower and the figure of merit are significantly enhanced with coupling intensity decreasing. When Coulomb interaction is finite, the spectra of thermoelectric quantities split into two sets. The peaks of the thermopower and figure of merit corresponding to doubly-occupied transport channels are much larger than unity for the small coupling intensity. These results are useful for understanding and designing highly efficient thermoelectric devices based on molecular magnet.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - Enhancement of Thermoelectric Effects in a Single Molecular Magnet due to Resonance Tunnelling
AU  - Jian-Hua Wang
AU  - Wei-Ping Xu
AU  - Yu-Ying Zhang
AU  - Yi-Hang Nie
Y1  - 2014/02/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ajmp.20140302.12
DO  - 10.11648/j.ajmp.20140302.12
T2  - American Journal of Modern Physics
JF  - American Journal of Modern Physics
JO  - American Journal of Modern Physics
SP  - 37
EP  - 44
PB  - Science Publishing Group
SN  - 2326-8891
UR  - https://doi.org/10.11648/j.ajmp.20140302.12
AB  - Thermoelectric properties of the single molecular magnet coupled to two metal electrodes are investigated theoretically. For the infinite Coulomb interaction the singly-occupied states determine the effective transport channels. At the low temperature the thermopower and the figure of merit present the large values near bonding state level, and for the given temperature the thermopower and the figure of merit are significantly enhanced with coupling intensity decreasing. When Coulomb interaction is finite, the spectra of thermoelectric quantities split into two sets. The peaks of the thermopower and figure of merit corresponding to doubly-occupied transport channels are much larger than unity for the small coupling intensity. These results are useful for understanding and designing highly efficient thermoelectric devices based on molecular magnet.
VL  - 3
IS  - 2
ER  -

Copy | Download