The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f-electron Charge Density Wave System: PrTe3

Eunsook Lee; D. H. Kim; Hyun Woo Kim; J. D. Denlinger; Heejung Kim; Junwon Kim; Kyoo Kim; B. I. Min; B. H. Min; Y. S. Kwon; J. S. Kang

doi:10.1038/srep30318

The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f-electron Charge Density Wave System: PrTe₃

Eunsook Lee, D. H. Kim, Hyun Woo Kim, J. D. Denlinger, Heejung Kim, Junwon Kim, Kyoo Kim, B. I. Min, B. H. Min, Y. S. Kwon, J. S. Kang

Department of Physics and Chemistry

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13 Scopus citations

Abstract

The electronic structure of a charge density wave (CDW) system PrTe₃ and its modulated structure in the CDW phase have been investigated by employing ARPES, XAS, Pr 4 f RPES, and first-principles band structure calculation. Pr ions are found to be nearly trivalent, supporting the CDW instability in the metallic Te sheets through partial filling. Finite Pr 4 f spectral weight is observed near the Fermi level, suggesting the non-negligible Pr 4 f contribution to the CDW formation through the Pr 4 f-Te 5p hybridization. The two-fold symmetric features in the measured Fermi surface (FS) of PrTe₃ are explained by the calculated FS for the assumed 7 × 1 CDW supercell formation in Te sheets. The shadow bands and the corresponding very weak FSs are observed, which originate from both the band folding due to the 3D interaction of Te sheets with neighboring Pr-Te layers and that due to the CDW-induced FS reconstruction. The straight vertical FSs are observed along k_z, demonstrating the nearly 2D character for the near-E_F states. The observed linear dichroism reveals the in-plane orbital character of the near-E_F Te 5p states.

Original language	English
Article number	30318
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep30318
State	Published - 25 Jul 2016

Bibliographical note

Funding Information:
This work was supported by the NRF under Contract No. 2014R1A1A2056546, No. 2015R1A2A1A15053564, and No. 2011-0025237, and also by the KISTI supercomputing center (No. KSC-2015-C3-068). The ALS is supported by U.S. DOE under Contract No. DE-AC02-05CH11231. BHM and YSK were supported by the Basic Science Research Program of the NRF (2013R1A1A2009778). The travel for the ARPES experiment at the ALS was supported in part by MSIP and PAL in Korea.

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@article{96d6ef01ab6a439ba67e23c7ca6e1b77,

title = "The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f-electron Charge Density Wave System: PrTe3",

abstract = "The electronic structure of a charge density wave (CDW) system PrTe3 and its modulated structure in the CDW phase have been investigated by employing ARPES, XAS, Pr 4 f RPES, and first-principles band structure calculation. Pr ions are found to be nearly trivalent, supporting the CDW instability in the metallic Te sheets through partial filling. Finite Pr 4 f spectral weight is observed near the Fermi level, suggesting the non-negligible Pr 4 f contribution to the CDW formation through the Pr 4 f-Te 5p hybridization. The two-fold symmetric features in the measured Fermi surface (FS) of PrTe3 are explained by the calculated FS for the assumed 7 × 1 CDW supercell formation in Te sheets. The shadow bands and the corresponding very weak FSs are observed, which originate from both the band folding due to the 3D interaction of Te sheets with neighboring Pr-Te layers and that due to the CDW-induced FS reconstruction. The straight vertical FSs are observed along kz, demonstrating the nearly 2D character for the near-EF states. The observed linear dichroism reveals the in-plane orbital character of the near-EF Te 5p states.",

author = "Eunsook Lee and Kim, {D. H.} and Kim, {Hyun Woo} and Denlinger, {J. D.} and Heejung Kim and Junwon Kim and Kyoo Kim and Min, {B. I.} and Min, {B. H.} and Kwon, {Y. S.} and Kang, {J. S.}",

note = "Funding Information: This work was supported by the NRF under Contract No. 2014R1A1A2056546, No. 2015R1A2A1A15053564, and No. 2011-0025237, and also by the KISTI supercomputing center (No. KSC-2015-C3-068). The ALS is supported by U.S. DOE under Contract No. DE-AC02-05CH11231. BHM and YSK were supported by the Basic Science Research Program of the NRF (2013R1A1A2009778). The travel for the ARPES experiment at the ALS was supported in part by MSIP and PAL in Korea.",

year = "2016",

month = jul,

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doi = "10.1038/srep30318",

language = "English",

volume = "6",

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T1 - The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f-electron Charge Density Wave System

T2 - PrTe3

AU - Lee, Eunsook

AU - Kim, D. H.

AU - Kim, Hyun Woo

AU - Denlinger, J. D.

AU - Kim, Heejung

AU - Kim, Junwon

AU - Kim, Kyoo

AU - Min, B. I.

AU - Min, B. H.

AU - Kwon, Y. S.

AU - Kang, J. S.

N1 - Funding Information: This work was supported by the NRF under Contract No. 2014R1A1A2056546, No. 2015R1A2A1A15053564, and No. 2011-0025237, and also by the KISTI supercomputing center (No. KSC-2015-C3-068). The ALS is supported by U.S. DOE under Contract No. DE-AC02-05CH11231. BHM and YSK were supported by the Basic Science Research Program of the NRF (2013R1A1A2009778). The travel for the ARPES experiment at the ALS was supported in part by MSIP and PAL in Korea.

PY - 2016/7/25

Y1 - 2016/7/25

N2 - The electronic structure of a charge density wave (CDW) system PrTe3 and its modulated structure in the CDW phase have been investigated by employing ARPES, XAS, Pr 4 f RPES, and first-principles band structure calculation. Pr ions are found to be nearly trivalent, supporting the CDW instability in the metallic Te sheets through partial filling. Finite Pr 4 f spectral weight is observed near the Fermi level, suggesting the non-negligible Pr 4 f contribution to the CDW formation through the Pr 4 f-Te 5p hybridization. The two-fold symmetric features in the measured Fermi surface (FS) of PrTe3 are explained by the calculated FS for the assumed 7 × 1 CDW supercell formation in Te sheets. The shadow bands and the corresponding very weak FSs are observed, which originate from both the band folding due to the 3D interaction of Te sheets with neighboring Pr-Te layers and that due to the CDW-induced FS reconstruction. The straight vertical FSs are observed along kz, demonstrating the nearly 2D character for the near-EF states. The observed linear dichroism reveals the in-plane orbital character of the near-EF Te 5p states.

AB - The electronic structure of a charge density wave (CDW) system PrTe3 and its modulated structure in the CDW phase have been investigated by employing ARPES, XAS, Pr 4 f RPES, and first-principles band structure calculation. Pr ions are found to be nearly trivalent, supporting the CDW instability in the metallic Te sheets through partial filling. Finite Pr 4 f spectral weight is observed near the Fermi level, suggesting the non-negligible Pr 4 f contribution to the CDW formation through the Pr 4 f-Te 5p hybridization. The two-fold symmetric features in the measured Fermi surface (FS) of PrTe3 are explained by the calculated FS for the assumed 7 × 1 CDW supercell formation in Te sheets. The shadow bands and the corresponding very weak FSs are observed, which originate from both the band folding due to the 3D interaction of Te sheets with neighboring Pr-Te layers and that due to the CDW-induced FS reconstruction. The straight vertical FSs are observed along kz, demonstrating the nearly 2D character for the near-EF states. The observed linear dichroism reveals the in-plane orbital character of the near-EF Te 5p states.

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U2 - 10.1038/srep30318

DO - 10.1038/srep30318

M3 - Article

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VL - 6

JO - Scientific Reports

JF - Scientific Reports

M1 - 30318

ER -

The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f-electron Charge Density Wave System: PrTe₃

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