Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2

doi:10.1103/PhysRevLett.114.037001

Title: Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in $2 H – {NbSe}_{2}$

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Abstract

We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe₂ that we measure by scanning tunneling spectroscopic imaging. We show, from the momentum and energy dependence of the quasiparticle interference, that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe₂. We demonstrate that, by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wave vector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe₂, we use this combination to confirm that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the charge density wave ordering wave vector.

Authors:

Arguello, C. J. ^[1]; Rosenthal, E. P. ^[1]; Andrade, E. F. ^[1]; Jin, W. ^[1]; Yeh, P. C. ^[1]; Zaki, N. ^[1]; Jia, S. ^[2]; Cava, R. J. ^[2]; Fernandes, R. M. ^[3]; Millis, A. J. ^[1]; Valla, T. ^[4]; Osgood, Jr., R. M. ^[5]; Pasupathy, A. N. ^[1]

Columbia Univ., New York, NY (United States)
Princeton Univ., Princeton, NJ (United States)
Univ. of Minnesota, Minneapolis, MN (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Columbia Univ., New York, NY (United States); Princeton Univ., Princeton, NJ (United States)

Publication Date:: 2015-01-21

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1182502

Alternate Identifier(s):: OSTI ID: 1181309

Report Number(s):: BNL-107408-2015-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: PO016; KC0202020

Grant/Contract Number:: SC00112704; FG 02-04-ER-46157; FG02-98ER45706; SC0012336; AC02-98CH10886

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 114; Journal Issue: 3; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Arguello, C. J., Rosenthal, E. P., Andrade, E. F., Jin, W., Yeh, P. C., Zaki, N., Jia, S., Cava, R. J., Fernandes, R. M., Millis, A. J., Valla, T., Osgood, Jr., R. M., and Pasupathy, A. N. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2.  United States: N. p., 2015. 
        Web.  doi:10.1103/PhysRevLett.114.037001.

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                    Arguello, C. J., Rosenthal, E. P., Andrade, E. F., Jin, W., Yeh, P. C., Zaki, N., Jia, S., Cava, R. J., Fernandes, R. M., Millis, A. J., Valla, T., Osgood, Jr., R. M., & Pasupathy, A. N. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2.  United States.  doi:10.1103/PhysRevLett.114.037001.

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                    Arguello, C. J., Rosenthal, E. P., Andrade, E. F., Jin, W., Yeh, P. C., Zaki, N., Jia, S., Cava, R. J., Fernandes, R. M., Millis, A. J., Valla, T., Osgood, Jr., R. M., and Pasupathy, A. N. Wed .  
        "Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2".  United States.  doi:10.1103/PhysRevLett.114.037001.  https://www.osti.gov/servlets/purl/1182502.

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@article{osti_1182502,

  title        = {Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2},

  author       = {Arguello, C. J. and Rosenthal, E. P. and Andrade, E. F. and Jin, W. and Yeh, P. C. and Zaki, N. and Jia, S. and Cava, R. J. and Fernandes, R. M. and Millis, A. J. and Valla, T. and Osgood, Jr., R. M. and Pasupathy, A. N.},

  abstractNote = {We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe₂ that we measure by scanning tunneling spectroscopic imaging. We show, from the momentum and energy dependence of the quasiparticle interference, that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe₂. We demonstrate that, by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wave vector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe₂, we use this combination to confirm that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the charge density wave ordering wave vector.},

  doi          = {10.1103/PhysRevLett.114.037001},

  journal      = {Physical Review Letters},

  number       = 3,

  volume       = 114,

  place        = {United States},

  year         = {2015},

  month        = {1}

}

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DOI: 10.1103/PhysRevLett.114.037001

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Title: Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2 H – NbSe 2

Abstract

Citation Formats

Title: Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in $2 H – {NbSe}_{2}$