Observation of Dirac-like band dispersion in LaAgSb<sub>2</sub>

X. Shi; P. Richard; Kefeng Wang; M. Liu; C. E. Matt; N. Xu; R. S. Dhaka; Z. Ristic; Tian Qian; Y. -F. Yang; C. Petrovic; M. Shi; H. Ding

doi:10.1103/PhysRevB.93.081105

Observation of Dirac-like band dispersion in LaAgSb<sub>2</sub>

X. Shi, P. Richard, Kefeng Wang, M. Liu, C. E. Matt, N. Xu, R. S. Dhaka, Z. Ristic, Tian Qian, Y. -F. Yang, C. Petrovic, M. Shi, H. Ding

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

Abstract

We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb2 in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. Our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.

Original language	English
Article number	081105
Number of pages	5
Journal	Physical Review B
Volume	93
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.93.081105
Publication status	Published - 16 Feb 2016
Externally published	Yes

Keywords

Electronic-structure
Ragsb2 r
La-nd
Gd
Sm

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10.1103/PhysRevB.93.081105

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title = "Observation of Dirac-like band dispersion in LaAgSb2",

abstract = "We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb2 in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. Our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.",

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doi = "10.1103/PhysRevB.93.081105",

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T1 - Observation of Dirac-like band dispersion in LaAgSb2

AU - Shi, X.

AU - Richard, P.

AU - Wang, Kefeng

AU - Liu, M.

AU - Matt, C. E.

AU - Xu, N.

AU - Dhaka, R. S.

AU - Ristic, Z.

AU - Qian, Tian

AU - Yang, Y. -F.

AU - Petrovic, C.

AU - Shi, M.

AU - Ding, H.

PY - 2016/2/16

Y1 - 2016/2/16

N2 - We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb2 in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. Our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.

AB - We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb2 in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. Our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.

KW - Electronic-structure

KW - Ragsb2 r

KW - La-nd

KW - Gd

KW - Sm

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JO - Physical Review B

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Observation of Dirac-like band dispersion in LaAgSb<sub>2</sub>

Abstract

Keywords

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