Resistivity of Weyl semimetals NbP and TaP under pressure

M. Einaga; K. Shimizu; J. Hu; Z. Q. Mao; A. Politano

doi:10.1002/pssr.201700182

Resistivity of Weyl semimetals NbP and TaP under pressure

M. Einaga, K. Shimizu, J. Hu, Z. Q. Mao, A. Politano

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Abstract

The resistivity of Weyl semimetals NbP and TaP has been investigated as a function of pressure and temperature. The behaviour of the resistivity as a function of pressure and temperature is closely correlated to the location of the Weyl points compared to the Fermi energy. The rapid increase of the resistivity in TaP and NbP under the application of 4.5 and 8.0 GPa is related with the shift of Weyl points, which affords a finite density of states near the Fermi energy. Specifically, we find that under pressure the Weyl points are situated above the Fermi energy. As regards the temperature behaviour, we detect a nonmonotonous behaviour of resistivity in TaP at 8.7 and 9.8 GPa as a function of temperature, whereas in the case of NbP the behaviour is more complicate.

Original language	English (US)
Article number	1700182
Journal	Physica Status Solidi - Rapid Research Letters
Volume	11
Issue number	8
DOIs	https://doi.org/10.1002/pssr.201700182
State	Published - Aug 2017

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics

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@article{5ede3c7fdead454fa7a1f3ce02653ab0,

title = "Resistivity of Weyl semimetals NbP and TaP under pressure",

abstract = "The resistivity of Weyl semimetals NbP and TaP has been investigated as a function of pressure and temperature. The behaviour of the resistivity as a function of pressure and temperature is closely correlated to the location of the Weyl points compared to the Fermi energy. The rapid increase of the resistivity in TaP and NbP under the application of 4.5 and 8.0 GPa is related with the shift of Weyl points, which affords a finite density of states near the Fermi energy. Specifically, we find that under pressure the Weyl points are situated above the Fermi energy. As regards the temperature behaviour, we detect a nonmonotonous behaviour of resistivity in TaP at 8.7 and 9.8 GPa as a function of temperature, whereas in the case of NbP the behaviour is more complicate.",

author = "M. Einaga and K. Shimizu and J. Hu and Mao, {Z. Q.} and A. Politano",

note = "Funding Information: The authors are grateful to Davide Campi for helpful scientific discussions. Work at Tulane is supported by the US DOE under grant DE-SC0014208 (for material synthesis). This research was supported by Japan Society for the Promotion of Science Grant-in-Aid for Specially Promoted Research, No. 26000006, JSPS KAKENHI. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

month = aug,

doi = "10.1002/pssr.201700182",

language = "English (US)",

volume = "11",

journal = "Physica Status Solidi - Rapid Research Letters",

issn = "1862-6254",

publisher = "Wiley-VCH Verlag",

number = "8",

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TY - JOUR

T1 - Resistivity of Weyl semimetals NbP and TaP under pressure

AU - Einaga, M.

AU - Shimizu, K.

AU - Hu, J.

AU - Mao, Z. Q.

AU - Politano, A.

N1 - Funding Information: The authors are grateful to Davide Campi for helpful scientific discussions. Work at Tulane is supported by the US DOE under grant DE-SC0014208 (for material synthesis). This research was supported by Japan Society for the Promotion of Science Grant-in-Aid for Specially Promoted Research, No. 26000006, JSPS KAKENHI. Publisher Copyright: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2017/8

Y1 - 2017/8

N2 - The resistivity of Weyl semimetals NbP and TaP has been investigated as a function of pressure and temperature. The behaviour of the resistivity as a function of pressure and temperature is closely correlated to the location of the Weyl points compared to the Fermi energy. The rapid increase of the resistivity in TaP and NbP under the application of 4.5 and 8.0 GPa is related with the shift of Weyl points, which affords a finite density of states near the Fermi energy. Specifically, we find that under pressure the Weyl points are situated above the Fermi energy. As regards the temperature behaviour, we detect a nonmonotonous behaviour of resistivity in TaP at 8.7 and 9.8 GPa as a function of temperature, whereas in the case of NbP the behaviour is more complicate.

AB - The resistivity of Weyl semimetals NbP and TaP has been investigated as a function of pressure and temperature. The behaviour of the resistivity as a function of pressure and temperature is closely correlated to the location of the Weyl points compared to the Fermi energy. The rapid increase of the resistivity in TaP and NbP under the application of 4.5 and 8.0 GPa is related with the shift of Weyl points, which affords a finite density of states near the Fermi energy. Specifically, we find that under pressure the Weyl points are situated above the Fermi energy. As regards the temperature behaviour, we detect a nonmonotonous behaviour of resistivity in TaP at 8.7 and 9.8 GPa as a function of temperature, whereas in the case of NbP the behaviour is more complicate.

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U2 - 10.1002/pssr.201700182

DO - 10.1002/pssr.201700182

M3 - Letter

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VL - 11

JO - Physica Status Solidi - Rapid Research Letters

JF - Physica Status Solidi - Rapid Research Letters

SN - 1862-6254

IS - 8

M1 - 1700182

ER -

Resistivity of Weyl semimetals NbP and TaP under pressure

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