Observation of Dirac-like band dispersion in LaAgSb2

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

doi:10.1103/PhysRevB.93.081105

Observation of Dirac-like band dispersion in LaAgSb2

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

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

34 Citations (Scopus)

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
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

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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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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, T.

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.

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DO - 10.1103/PhysRevB.93.081105

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SN - 2469-9950

VL - 93

JO - Physical Review B

JF - Physical Review B

IS - 8

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ER -

Observation of Dirac-like band dispersion in LaAgSb2

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