Thermopower and thermal conductivity in the Weyl semimetal NbP

Stockert U, Dos Reis RD, Ajeesh MO, Watzman SJ, Schmidt M, Shekhar C, Heremans JP, Felser C, Baenitz M, Nicklas M (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Journal of Physics: Condensed Matter Institute of Physics: Hybrid Open Access

Book Volume: 29

Article Number: 325701

Journal Issue: 32

DOI: 10.1088/1361-648X/aa7a3b

Abstract

The Weyl semimetal NbP exhibits an extremely large magnetoresistance and an ultra-high mobility. The large magnetoresistance originates from a combination of the nearly perfect compensation between electron- and hole-type charge carriers and the high mobility, which is relevant to the topological band structure. In this work we report on temperature- and fielddependent thermopower and thermal conductivity experiments on NbP. Additionally, we carried out complementary heat capacity, magnetization, and electrical resistivity measurements. We found a giant adiabatic magnetothermopower with a maximum of 800 μV K^-1 at 50 K in a field of 9 T. Such large effects have been observed rarely in bulk materials. We further observe pronounced quantum oscillations in both thermal conductivity and thermopower. The obtained frequencies compare well with our heat capacity and magnetization data.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE) Ohio State University

United States (USA) (US)

How to cite

APA:

Stockert, U., Dos Reis, R.D., Ajeesh, M.O., Watzman, S.J., Schmidt, M., Shekhar, C.,... Nicklas, M. (2017). Thermopower and thermal conductivity in the Weyl semimetal NbP. Journal of Physics: Condensed Matter, 29(32). https://doi.org/10.1088/1361-648X/aa7a3b

MLA:

Stockert, Ulrike, et al. "Thermopower and thermal conductivity in the Weyl semimetal NbP." Journal of Physics: Condensed Matter 29.32 (2017).

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