Jump to main content
Jump to site search

Issue 10, 2018
Previous Article Next Article

Large Nernst power factor over a broad temperature range in polycrystalline Weyl semimetal NbP

Author affiliations

Abstract

The discovery of topological materials has provided new opportunities to exploit advanced materials for heat-to-electricity energy conversion as they share many common characteristics with thermoelectric materials. In this work, we report the magneto-thermoelectric properties and Nernst effect of the topological Weyl semimetal NbP. We find that polycrystalline, bulk NbP shows a significantly larger Nernst thermopower than its conventional thermopower under magnetic field. As a result, a maximum Nernst power factor of ∼35 × 10−4 W m−1 K−2 is achieved at 9 T and 136 K, which is 4 times higher than its conventional power factor and is also comparable to that of state-of-the-art thermoelectrics. Moreover, the Nernst power factor maintains relatively large value over a broad temperature range. These results highlight that the enhancement of thermoelectric performance can be achieved in topological semimetals based on the Nernst effect and transverse transport.

Graphical abstract: Large Nernst power factor over a broad temperature range in polycrystalline Weyl semimetal NbP

Back to tab navigation

Supplementary files

Article information


Submitted
16 Jul 2018
Accepted
14 Aug 2018
First published
14 Aug 2018

This article is Open Access

Energy Environ. Sci., 2018,11, 2813-2820
Article type
Communication

Large Nernst power factor over a broad temperature range in polycrystalline Weyl semimetal NbP

C. Fu, S. N. Guin, S. J. Watzman, G. Li, E. Liu, N. Kumar, V. Süβ, W. Schnelle, G. Auffermann, C. Shekhar, Y. Sun, J. Gooth and C. Felser, Energy Environ. Sci., 2018, 11, 2813
DOI: 10.1039/C8EE02077A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements