Fermi surface reconstruction in CeTe 2 induced by charge density waves investigated via angle resolved photoemission

J. S. Kang; D. H. Kim; H. J. Lee; Jihoon Hwang; Han Koo Lee; H. D. Kim; B. H. Min; K. E. Lee; Y. S. Kwon; J. W. Kim; Kyoo Kim; B. H. Kim; B. I. Min

doi:10.1103/PhysRevB.85.085104

Fermi surface reconstruction in CeTe ₂ induced by charge density waves investigated via angle resolved photoemission

J. S. Kang, D. H. Kim, H. J. Lee, Jihoon Hwang, Han Koo Lee, H. D. Kim, B. H. Min, K. E. Lee, Y. S. Kwon, J. W. Kim, Kyoo Kim, B. H. Kim, B. I. Min

Department of Physics and Chemistry

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19 Scopus citations

Abstract

Electronic structures of a charge-density wave (CDW) system CeTe _2-xSb _x (x=0, 0.05) have been investigated by employing angle-resolved photoemission spectroscopy (ARPES) and the first-principles electronic and phonon band-structure methods. The observed Fermi surface (FS) agrees very well with the calculated FS for the undistorted CeTe ₂ both in shapes and sizes. The metallic states crossing the Fermi level (E _F) are observed in ARPES even in the CDW state. The carriers near E _F have mainly the Te(1) 5p character, with a negligible contribution from Ce 4f states. The supercell (shadow) bands and the corresponding very weak FSs are found to arise from band folding due to the interaction of Te(1) layers with Ce-Te(2) layers. We found that the CDW modulation vector is along Γ-X (Q _CDWX), which is not coincident with the most prominent FS nesting vector.

Original language	English
Article number	085104
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.85.085104
State	Published - 10 Feb 2012

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Kang, J. S., Kim, D. H., Lee, H. J., Hwang, J., Lee, H. K., Kim, H. D., Min, B. H., Lee, K. E., Kwon, Y. S., Kim, J. W., Kim, K., Kim, B. H., & Min, B. I. (2012). Fermi surface reconstruction in CeTe ₂ induced by charge density waves investigated via angle resolved photoemission. Physical Review B - Condensed Matter and Materials Physics, 85(8), Article 085104. https://doi.org/10.1103/PhysRevB.85.085104

@article{c09c30a0caab4923bd5f061337e5abc0,

title = "Fermi surface reconstruction in CeTe 2 induced by charge density waves investigated via angle resolved photoemission",

abstract = "Electronic structures of a charge-density wave (CDW) system CeTe 2-xSb x (x=0, 0.05) have been investigated by employing angle-resolved photoemission spectroscopy (ARPES) and the first-principles electronic and phonon band-structure methods. The observed Fermi surface (FS) agrees very well with the calculated FS for the undistorted CeTe 2 both in shapes and sizes. The metallic states crossing the Fermi level (E F) are observed in ARPES even in the CDW state. The carriers near E F have mainly the Te(1) 5p character, with a negligible contribution from Ce 4f states. The supercell (shadow) bands and the corresponding very weak FSs are found to arise from band folding due to the interaction of Te(1) layers with Ce-Te(2) layers. We found that the CDW modulation vector is along Γ-X (Q CDWX), which is not coincident with the most prominent FS nesting vector.",

author = "Kang, {J. S.} and Kim, {D. H.} and Lee, {H. J.} and Jihoon Hwang and Lee, {Han Koo} and Kim, {H. D.} and Min, {B. H.} and Lee, {K. E.} and Kwon, {Y. S.} and Kim, {J. W.} and Kyoo Kim and Kim, {B. H.} and Min, {B. I.}",

year = "2012",

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doi = "10.1103/PhysRevB.85.085104",

language = "English",

volume = "85",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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publisher = "American Physical Society",

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Kang, JS, Kim, DH, Lee, HJ, Hwang, J, Lee, HK, Kim, HD, Min, BH, Lee, KE, Kwon, YS, Kim, JW, Kim, K, Kim, BH & Min, BI 2012, 'Fermi surface reconstruction in CeTe ₂ induced by charge density waves investigated via angle resolved photoemission', Physical Review B - Condensed Matter and Materials Physics, vol. 85, no. 8, 085104. https://doi.org/10.1103/PhysRevB.85.085104

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AU - Kang, J. S.

AU - Kim, D. H.

AU - Lee, H. J.

AU - Hwang, Jihoon

AU - Lee, Han Koo

AU - Kim, H. D.

AU - Min, B. H.

AU - Lee, K. E.

AU - Kwon, Y. S.

AU - Kim, J. W.

AU - Kim, Kyoo

AU - Kim, B. H.

AU - Min, B. I.

PY - 2012/2/10

Y1 - 2012/2/10

N2 - Electronic structures of a charge-density wave (CDW) system CeTe 2-xSb x (x=0, 0.05) have been investigated by employing angle-resolved photoemission spectroscopy (ARPES) and the first-principles electronic and phonon band-structure methods. The observed Fermi surface (FS) agrees very well with the calculated FS for the undistorted CeTe 2 both in shapes and sizes. The metallic states crossing the Fermi level (E F) are observed in ARPES even in the CDW state. The carriers near E F have mainly the Te(1) 5p character, with a negligible contribution from Ce 4f states. The supercell (shadow) bands and the corresponding very weak FSs are found to arise from band folding due to the interaction of Te(1) layers with Ce-Te(2) layers. We found that the CDW modulation vector is along Γ-X (Q CDWX), which is not coincident with the most prominent FS nesting vector.

AB - Electronic structures of a charge-density wave (CDW) system CeTe 2-xSb x (x=0, 0.05) have been investigated by employing angle-resolved photoemission spectroscopy (ARPES) and the first-principles electronic and phonon band-structure methods. The observed Fermi surface (FS) agrees very well with the calculated FS for the undistorted CeTe 2 both in shapes and sizes. The metallic states crossing the Fermi level (E F) are observed in ARPES even in the CDW state. The carriers near E F have mainly the Te(1) 5p character, with a negligible contribution from Ce 4f states. The supercell (shadow) bands and the corresponding very weak FSs are found to arise from band folding due to the interaction of Te(1) layers with Ce-Te(2) layers. We found that the CDW modulation vector is along Γ-X (Q CDWX), which is not coincident with the most prominent FS nesting vector.

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Fermi surface reconstruction in CeTe ₂ induced by charge density waves investigated via angle resolved photoemission

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