Transport evidence of 3D topological nodal-line semimetal phase in ZrSiS

Junran Zhang; Ming Gao; Jinglei Zhang; Xuefeng Wang; Xiaoqian Zhang; Minhao Zhang; Wei Niu; Rong Zhang; Yongbing Xu

doi:10.1007/s11467-017-0705-7

Transport evidence of 3D topological nodal-line semimetal phase in ZrSiS

Junran Zhang, Ming Gao, Jinglei Zhang, Xuefeng Wang^*, Xiaoqian Zhang, Minhao Zhang, Wei Niu, Rong Zhang, Yongbing Xu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Topological nodal-line semimetal is a new emerging material, which is viewed as a three-dimensional (3D) analog of graphene with the conduction and valence bands crossing at Dirac nodes, resulting in a range of exotic transport properties. Herein, we report on the direct quantum transport evidence of the 3D topological nodal-line semimetal phase of ZrSiS with angular-dependent magnetoresistance (MR) and the combined de Hass-van Alphen (dHvA) and Shubnikov-de Hass (SdH) oscillations. Through fitting by a two-band model, the MR results demonstrate high topological nodal-line fermion densities of approximately 6 × 10²¹ cm⁻³ and a perfect electron/hole compensation ratio of 0.94, which is consistent with the semi-classical expression fitting of Hall conductance G_xy and the theoretical calculation. Both the SdH and dHvA oscillations provide clear evidence of 3D topological nodal-line semimetal characteristic.

Original language	English
Article number	137201
Pages (from-to)	1-9
Number of pages	9
Journal	Frontiers of Physics
Volume	13
Issue number	1
DOIs	https://doi.org/10.1007/s11467-017-0705-7
Publication status	E-pub ahead of print - 22 Jul 2017

Keywords

dHvA oscillations
high-density fermion
nodal-line semimetals
SdH oscillations

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10.1007/s11467-017-0705-7

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title = "Transport evidence of 3D topological nodal-line semimetal phase in ZrSiS",

abstract = "Topological nodal-line semimetal is a new emerging material, which is viewed as a three-dimensional (3D) analog of graphene with the conduction and valence bands crossing at Dirac nodes, resulting in a range of exotic transport properties. Herein, we report on the direct quantum transport evidence of the 3D topological nodal-line semimetal phase of ZrSiS with angular-dependent magnetoresistance (MR) and the combined de Hass-van Alphen (dHvA) and Shubnikov-de Hass (SdH) oscillations. Through fitting by a two-band model, the MR results demonstrate high topological nodal-line fermion densities of approximately 6 × 1021 cm−3 and a perfect electron/hole compensation ratio of 0.94, which is consistent with the semi-classical expression fitting of Hall conductance Gxy and the theoretical calculation. Both the SdH and dHvA oscillations provide clear evidence of 3D topological nodal-line semimetal characteristic.",

keywords = "dHvA oscillations, high-density fermion, nodal-line semimetals, SdH oscillations",

author = "Junran Zhang and Ming Gao and Jinglei Zhang and Xuefeng Wang and Xiaoqian Zhang and Minhao Zhang and Wei Niu and Rong Zhang and Yongbing Xu",

year = "2017",

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doi = "10.1007/s11467-017-0705-7",

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AU - Zhang, Junran

AU - Gao, Ming

AU - Zhang, Jinglei

AU - Wang, Xuefeng

AU - Zhang, Xiaoqian

AU - Zhang, Minhao

AU - Niu, Wei

AU - Zhang, Rong

AU - Xu, Yongbing

PY - 2017/7/22

Y1 - 2017/7/22

N2 - Topological nodal-line semimetal is a new emerging material, which is viewed as a three-dimensional (3D) analog of graphene with the conduction and valence bands crossing at Dirac nodes, resulting in a range of exotic transport properties. Herein, we report on the direct quantum transport evidence of the 3D topological nodal-line semimetal phase of ZrSiS with angular-dependent magnetoresistance (MR) and the combined de Hass-van Alphen (dHvA) and Shubnikov-de Hass (SdH) oscillations. Through fitting by a two-band model, the MR results demonstrate high topological nodal-line fermion densities of approximately 6 × 1021 cm−3 and a perfect electron/hole compensation ratio of 0.94, which is consistent with the semi-classical expression fitting of Hall conductance Gxy and the theoretical calculation. Both the SdH and dHvA oscillations provide clear evidence of 3D topological nodal-line semimetal characteristic.

AB - Topological nodal-line semimetal is a new emerging material, which is viewed as a three-dimensional (3D) analog of graphene with the conduction and valence bands crossing at Dirac nodes, resulting in a range of exotic transport properties. Herein, we report on the direct quantum transport evidence of the 3D topological nodal-line semimetal phase of ZrSiS with angular-dependent magnetoresistance (MR) and the combined de Hass-van Alphen (dHvA) and Shubnikov-de Hass (SdH) oscillations. Through fitting by a two-band model, the MR results demonstrate high topological nodal-line fermion densities of approximately 6 × 1021 cm−3 and a perfect electron/hole compensation ratio of 0.94, which is consistent with the semi-classical expression fitting of Hall conductance Gxy and the theoretical calculation. Both the SdH and dHvA oscillations provide clear evidence of 3D topological nodal-line semimetal characteristic.

KW - dHvA oscillations

KW - high-density fermion

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KW - SdH oscillations

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ER -

Transport evidence of 3D topological nodal-line semimetal phase in ZrSiS

Abstract

Keywords

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