Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O

Tan, S. Y.; Jiang, J.; Ye, Z. R.; Niu, X. H.; Song, Y.; Zhang, C. L.; Dai, P. C.; Xie, B. P.; Lai, X. C.; Feng, D. L.

doi:10.1038/srep09515

Title: Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O

Abstract

The electronic structure of Na₂Ti₂Sb₂O single crystal is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na₂Ti₂Sb₂O in the non-magnetic state, which indicates that there is no magnetic order in Na₂Ti₂Sb₂O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na₂Ti₂Sb₂O. Photon energy dependent ARPES results suggest that the electronic structure of Na₂Ti₂Sb₂O is rather two-dimensional. Moreover, we find a density wave energy gap forms below the transition temperature and reaches 65 meV at 7 K, indicating that Na₂Ti₂Sb₂O is likely a weakly correlated CDW material in the strong electron-phonon interaction regime. (author)

Authors:

Tan, S. Y. ^[1]; Jiang, J. ^[2]; Ye, Z. R. ^[3]; Niu, X. H. ^[2]; Song, Y. ^[4]; Zhang, C. L. ^[5]; Dai, P. C. ^[4]; Xie, B. P. ^[2]; Lai, X. C. ^[6]; Feng, D. L. ^[2]

Science and Technology on Surface Physics and Chemistry Lab., Mianyang (China); Fundan Univ., Shanghai (China)
Fundan Univ., Shanghai (China); Nanjing Univ., Nanjing (China)
Fundan Univ., Shanghai (China)
Rice Univ., Houston, TX (United States)
Rice Univ., Houston, TX (United States); Univ. of Tennessee, Knoxville, TN (United States)
Science and Technology on Surface Physics and Chemistry Lab., Mianyang (China)

Publication Date:: Thu Apr 30 00:00:00 EDT 2015

Research Org.:: Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1184847

Grant/Contract Number:: FG02-05ER46202

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 5; Journal Issue: C; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Tan, S. Y., Jiang, J., Ye, Z. R., Niu, X. H., Song, Y., Zhang, C. L., Dai, P. C., Xie, B. P., Lai, X. C., and Feng, D. L. Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O.  United States: N. p., 2015. 
Web.  doi:10.1038/srep09515.

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                    Tan, S. Y., Jiang, J., Ye, Z. R., Niu, X. H., Song, Y., Zhang, C. L., Dai, P. C., Xie, B. P., Lai, X. C., & Feng, D. L. Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O.  United States.  https://doi.org/10.1038/srep09515

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                    Tan, S. Y., Jiang, J., Ye, Z. R., Niu, X. H., Song, Y., Zhang, C. L., Dai, P. C., Xie, B. P., Lai, X. C., and Feng, D. L. Thu .  
"Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O".  United States.  https://doi.org/10.1038/srep09515.  https://www.osti.gov/servlets/purl/1184847.

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@article{osti_1184847,

  title        = {Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O},

  author       = {Tan, S. Y. and Jiang, J. and Ye, Z. R. and Niu, X. H. and Song, Y. and Zhang, C. L. and Dai, P. C. and Xie, B. P. and Lai, X. C. and Feng, D. L.},

  abstractNote = {The electronic structure of Na₂Ti₂Sb₂O single crystal is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na₂Ti₂Sb₂O in the non-magnetic state, which indicates that there is no magnetic order in Na₂Ti₂Sb₂O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na₂Ti₂Sb₂O. Photon energy dependent ARPES results suggest that the electronic structure of Na₂Ti₂Sb₂O is rather two-dimensional. Moreover, we find a density wave energy gap forms below the transition temperature and reaches 65 meV at 7 K, indicating that Na₂Ti₂Sb₂O is likely a weakly correlated CDW material in the strong electron-phonon interaction regime. (author)},

  doi          = {10.1038/srep09515},

  journal      = {Scientific Reports},

  number       = C,

  volume       = 5,

  place        = {United States},

  year         = {Thu Apr 30 00:00:00 EDT 2015},

  month        = {Thu Apr 30 00:00:00 EDT 2015}

}

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Title: Photoemission study of the electronic structure and charge density waves of Na₂Ti₂Sb₂O

Abstract

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Possible Charge-Density-Wave/Spin-Density-Wave in the Layered Pnictide−Oxides: Na ₂ Ti ₂ Pn ₂ O (Pn = As, Sb)
journal, May 2001

Nodal quasiparticle in pseudogapped colossal magnetoresistive manganites
journal, November 2005

Layered pnictide-oxide Na ₂ Ti ₂ Pn ₂ O (Pn=As, Sb): a candidate for spin density waves
journal, August 2013

Electronic structure of the ${BaTi}_{2}$ ${As}_{2} O$ parent compound of the titanium-based oxypnictide superconductor
journal, April 2014

Ba _{1– x} Na _x Ti ₂ Sb ₂ O (0.0 ≤ x ≤ 0.33): A Layered Titanium-Based Pnictide Oxide Superconductor
journal, September 2012

Iron-Based Layered Superconductor La[O _1- _x F _x ]FeAs ( x = 0.05−0.12) with T _c = 26 K
journal, March 2008

Chemistry of layered d-metal pnictide oxides and their potential as candidates for new superconductors
text, January 2008

A novel mechanism of charge density wave in a transition metal dichalcogenide
text, January 2006

Electronic and atomic structures of the Sr3Ir4Sn13 single crystal: A possible charge density wave material
journal, January 2017