Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex

Kogar, A.; Gu, G.; Vig, S.; Thaler, A.; Wong, M. H.; Xiao, Y.; Reig-i-Plessis, D.; Cho, G. Y.; Valla, T.; Pan, Z.; Schneeloch, J.; Zhong, R.; Hughes, T. L.; MacDougall, G. J.; Chiang, T. -C.; Abbamonte, P.

doi:10.1103/PhysRevLett.115.257402

Title: Surface collective modes in the topological insulators Bi₂Se₃ and Bi_0.5Sb_1.5Te_3-xSe_x

Abstract

In this study, we used low-energy, momentum-resolved inelastic electron scattering to study surface collective modes of the three-dimensional topological insulators Bi₂Se₃ and Bi_0.5Sb_1.5Te_3-xSe_x. Our goal was to identify the “spin plasmon” predicted by Raghu and co-workers [Phys. Rev. Lett. 104, 116401 (2010)]. Instead, we found that the primary collective mode is a surface plasmon arising from the bulk, free carriers in these materials. This excitation dominates the spectral weight in the bosonic function of the surface χ''(q,ω) at THz energy scales, and is the most likely origin of a quasiparticle dispersion kink observed in previous photoemission experiments. Our study suggests that the spin plasmon may mix with this other surface mode, calling for a more nuanced understanding of optical experiments in which the spin plasmon is reported to play a role.

Authors:

Kogar, A. ^[1]; Gu, G. ^[2]; Vig, S. ^[1]; Thaler, A. ^[1]; Wong, M. H. ^[1]; Xiao, Y. ^[1]; Reig-i-Plessis, D. ^[1]; Cho, G. Y. ^[3]; Valla, T. ^[2]; Pan, Z. ^[2]; Schneeloch, J. ^[2]; Zhong, R. ^[2]; Hughes, T. L. ^[1]; MacDougall, G. J. ^[1]; Chiang, T. -C. ^[1]; Abbamonte, P. ^[1]

Univ. of Illinois, Urbana, IL (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Korea Advanced Institute of Science and Technology, Daejeon (Korea)

Publication Date:: Tue Dec 15 00:00:00 EST 2015

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)

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

OSTI Identifier:: 1240702

Alternate Identifier(s):: OSTI ID: 1229910

Report Number(s):: BNL-111864-2016-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: PO010; PO016; KC0201060; KC0202020

Grant/Contract Number:: SC0012704; AC02-98CH10886; SC00112704; FG02-07ER46383; SC0012649

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 115; Journal Issue: 25; 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


                    Kogar, A., Gu, G., Vig, S., Thaler, A., Wong, M. H., Xiao, Y., Reig-i-Plessis, D., Cho, G. Y., Valla, T., Pan, Z., Schneeloch, J., Zhong, R., Hughes, T. L., MacDougall, G. J., Chiang, T. -C., and Abbamonte, P. Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.115.257402.

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                    Kogar, A., Gu, G., Vig, S., Thaler, A., Wong, M. H., Xiao, Y., Reig-i-Plessis, D., Cho, G. Y., Valla, T., Pan, Z., Schneeloch, J., Zhong, R., Hughes, T. L., MacDougall, G. J., Chiang, T. -C., & Abbamonte, P. Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex.  United States.  https://doi.org/10.1103/PhysRevLett.115.257402

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                    Kogar, A., Gu, G., Vig, S., Thaler, A., Wong, M. H., Xiao, Y., Reig-i-Plessis, D., Cho, G. Y., Valla, T., Pan, Z., Schneeloch, J., Zhong, R., Hughes, T. L., MacDougall, G. J., Chiang, T. -C., and Abbamonte, P. Tue .  
"Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex".  United States.  https://doi.org/10.1103/PhysRevLett.115.257402.  https://www.osti.gov/servlets/purl/1240702.

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@article{osti_1240702,

  title        = {Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex},

  author       = {Kogar, A. and Gu, G. and Vig, S. and Thaler, A. and Wong, M. H. and Xiao, Y. and Reig-i-Plessis, D. and Cho, G. Y. and Valla, T. and Pan, Z. and Schneeloch, J. and Zhong, R. and Hughes, T. L. and MacDougall, G. J. and Chiang, T. -C. and Abbamonte, P.},

  abstractNote = {In this study, we used low-energy, momentum-resolved inelastic electron scattering to study surface collective modes of the three-dimensional topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex. Our goal was to identify the “spin plasmon” predicted by Raghu and co-workers [Phys. Rev. Lett. 104, 116401 (2010)]. Instead, we found that the primary collective mode is a surface plasmon arising from the bulk, free carriers in these materials. This excitation dominates the spectral weight in the bosonic function of the surface χ''(q,ω) at THz energy scales, and is the most likely origin of a quasiparticle dispersion kink observed in previous photoemission experiments. Our study suggests that the spin plasmon may mix with this other surface mode, calling for a more nuanced understanding of optical experiments in which the spin plasmon is reported to play a role.},

  doi          = {10.1103/PhysRevLett.115.257402},

  journal      = {Physical Review Letters},

  number       = 25,

  volume       = 115,

  place        = {United States},

  year         = {Tue Dec 15 00:00:00 EST 2015},

  month        = {Tue Dec 15 00:00:00 EST 2015}

}

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Title: Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3-xSex

Abstract

Citation Formats

Quantum Spin Hall Effect in Graphene journal, November 2005

Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells journal, December 2006

Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface journal, May 2009

Topological phases and the quantum spin Hall effect in three dimensions journal, May 2009

Topological invariants of time-reversal-invariant band structures journal, March 2007

A topological Dirac insulator in a quantum spin Hall phase journal, April 2008

Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3 journal, June 2009

Observation of Unconventional Quantum Spin Textures in Topological Insulators journal, February 2009

Observation of a large-gap topological-insulator class with a single Dirac cone on the surface journal, May 2009

Topological surface states protected from backscattering by chiral spin texture journal, August 2009

STM Imaging of Electronic Waves on the Surface of Bi2Te3: Topologically Protected Surface States and Hexagonal Warping Effects journal, January 2010

Collective Modes of a Helical Liquid journal, March 2010

Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi 2 Se 3 , Bi 2 Te 3 , and Cu-Doped Bi 2 Se 3 journal, May 2013

Observation of topological order in a superconducting doped topological insulator journal, September 2010

Tunable Dirac Fermion Dynamics in Topological Insulators journal, August 2013

Measurement of an Exceptionally Weak Electron-Phonon Coupling on the Surface of the Topological Insulator Bi 2 Se 3 Using Angle-Resolved Photoemission Spectroscopy journal, May 2012

Proposal for a topological plasmon spin rectifier journal, January 2011

Plasmonics in Dirac systems: from graphene to topological insulators journal, March 2014

Observation of Dirac plasmons in a topological insulator journal, July 2013

Observation of Magnetoplasmons in Bi 2 Se 3 Topological Insulator journal, August 2015

Temperature-resolution anomalies in the reconstruction of time dynamics from energy-loss experiments journal, June 2014

Bulk Fermi surface coexistence with Dirac surface state in Bi 2 Se 3 : A comparison of photoemission and Shubnikov–de Haas measurements journal, May 2010

A tunable topological insulator in the spin helical Dirac transport regime journal, July 2009

A Raman and far-infrared investigation of phonons in the rhombohedral V2–VI3 compounds Bi2Te3, Bi2Se3, Sb2Te3 and Bi2(Te1−xSex)3 (0 <x < 1), (Bi1−ySby)2Te3 (0 <y < 1) journal, December 1977

Surface Plasmons in Thin Films journal, June 1969

Observation of spatial dispersion of surface plasmon mode in HREELS of heavily doped n-type InAs(001) journal, February 1992

Optical and Electrical Investigations of n-Type Bi2Se3 Single Crystals journal, February 1992

Far-infrared cyclotron resonance and Faraday effect in Bi 2 Se 3 journal, September 2010

Ultrafast terahertz dynamics of hot Dirac-electron surface scattering in the topological insulator Bi 2 Se 3 journal, April 2014

Ultraviolet and visible range plasmonics in the topological insulator Bi1.5Sb0.5Te1.8Se1.2 journal, October 2014

Dirac Fermion and Plasmon Dynamics in Graphene and 3D Topological Insulators journal, April 2019

Finite momentum Cooper pairing in three-dimensional topological insulator Josephson junctions journal, August 2018

Millimetre-long transport of photogenerated carriers in topological insulators journal, December 2019

Optoelectronic devices, plasmonics, and photonics with topological insulators journal, March 2017

Confined-path interference suppressed quantum correction on weak antilocalization effect in a BiSbTeSe 2 topological insulator journal, January 2018

Effect of the electron-phonon interaction on the spin texture in Bi 2 − y Sb y Se 3 − x Te x journal, October 2019

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Title: Surface collective modes in the topological insulators Bi₂Se₃ and Bi_0.5Sb_1.5Te_3-xSe_x

Quantum Spin Hall Effect in Graphene
journal, November 2005

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Topological surface states protected from backscattering by chiral spin texture
journal, August 2009

STM Imaging of Electronic Waves on the Surface of ${Bi}_{2} {Te}_{3}$ : Topologically Protected Surface States and Hexagonal Warping Effects
journal, January 2010

Collective Modes of a Helical Liquid
journal, March 2010

Anomalous Dressing of Dirac Fermions in the Topological Surface State of ${Bi}_{2} {Se}_{3}$ , ${Bi}_{2} {Te}_{3}$ , and Cu-Doped ${Bi}_{2} {Se}_{3}$
journal, May 2013

Observation of topological order in a superconducting doped topological insulator
journal, September 2010

Tunable Dirac Fermion Dynamics in Topological Insulators
journal, August 2013

Measurement of an Exceptionally Weak Electron-Phonon Coupling on the Surface of the Topological Insulator ${Bi}_{2} {Se}_{3}$ Using Angle-Resolved Photoemission Spectroscopy
journal, May 2012

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journal, March 2014

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journal, July 2013

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journal, August 2015

Temperature-resolution anomalies in the reconstruction of time dynamics from energy-loss experiments
journal, June 2014

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A tunable topological insulator in the spin helical Dirac transport regime
journal, July 2009

A Raman and far-infrared investigation of phonons in the rhombohedral V2–VI3 compounds Bi2Te3, Bi2Se3, Sb2Te3 and Bi2(Te1−xSex)3 (0 <x < 1), (Bi1−ySby)2Te3 (0 <y < 1)
journal, December 1977

Surface Plasmons in Thin Films
journal, June 1969

Observation of spatial dispersion of surface plasmon mode in HREELS of heavily doped n-type InAs(001)
journal, February 1992

Optical and Electrical Investigations of n-Type Bi2Se3 Single Crystals
journal, February 1992

Far-infrared cyclotron resonance and Faraday effect in ${Bi}_{2} {Se}_{3}$
journal, September 2010

Ultrafast terahertz dynamics of hot Dirac-electron surface scattering in the topological insulator ${Bi}_{2}$ ${Se}_{3}$
journal, April 2014

Ultraviolet and visible range plasmonics in the topological insulator Bi1.5Sb0.5Te1.8Se1.2
journal, October 2014

Dirac Fermion and Plasmon Dynamics in Graphene and 3D Topological Insulators
journal, April 2019

Finite momentum Cooper pairing in three-dimensional topological insulator Josephson junctions
journal, August 2018

Millimetre-long transport of photogenerated carriers in topological insulators
journal, December 2019

Optoelectronic devices, plasmonics, and photonics with topological insulators
journal, March 2017

Confined-path interference suppressed quantum correction on weak antilocalization effect in a BiSbTeSe ₂ topological insulator
journal, January 2018

Effect of the electron-phonon interaction on the spin texture in ${Bi}_{2 - y} {Sb}_{y} {Se}_{3 - x} {Te}_{x}$
journal, October 2019

Chiral Spin Mode on the Surface of a Topological Insulator
journal, September 2017

Polaritons in van der Waals materials
journal, October 2016

Effective hydrodynamic field theory and condensation picture of topological insulators
text, January 2015

Chiral Spin Mode on the Surface of a Topological Insulator
text, January 2017

Crossover of Charge Fluctuations across the Strange Metal Phase Diagram
text, January 2019

Optoelectronic devices, plasmonics and photonics with topological insulators
preprint, January 2019