Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator

Ärrälä, Minna; Hafiz, Hasnain; Mou, Daixiang; Wu, Yun; Jiang, Rui; Riedemann, Trevor; Lograsso, Thomas A.; Barbiellini, Bernardo; Kaminski, Adam; Bansil, Arun; Lindroos, Matti

doi:10.1103/PhysRevB.94.155144

Title: Laser angle-resolved photoemission as a probe of initial state k_z dispersion, final-state band gaps, and spin texture of Dirac states in the Bi₂Te₃ topological insulator

Abstract

Here, we have obtained angle-resolved photoemission (ARPES) spectra from single crystals of the topological insulator material Bi₂Te₃ using tunable laser spectrometer. The spectra were collected for eleven different photon energies ranging from 5.57 to 6.70 eV for incident light polarized linearly along two different in-plane directions. Parallel first-principles, fully relativistic computations of photo-intensities were carried out using the experimental geometry within the framework of the one-step model of photoemission. Good overall accord between theory and experiment is used to gain insight into how properties of the initial and final state band structures as well as those of the topological surface states and their spin-textures are reflected in the laser-ARPES spectra. In conclusion, our analysis reveals that laser-ARPES is sensitive to both the initial state k_z dispersion and the presence of delicate gaps in the final state electronic spectrum.

Authors:

Ärrälä, Minna ^[1]; Hafiz, Hasnain ^[2]; Mou, Daixiang ^[3]; Wu, Yun ^[3]; Jiang, Rui ^[3]; Riedemann, Trevor ^[4]; Lograsso, Thomas A. ^[5]; Barbiellini, Bernardo ^[2]; Kaminski, Adam ^[3]; Bansil, Arun ^[2]; Lindroos, Matti ^[6]

Tampere Univ. of Technology (Finland). Inst. of Physics
Northeastern Univ., Boston, MA (United States). Dept. of Physics
Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab., Ames, IA (United States). Materials Science and Engineering Division
Ames Lab., Ames, IA (United States). Materials Science and Engineering Division
Ames Lab., Ames, IA (United States). Materials Science and Engineering Division; Iowa State Univ., Ames, IA (United States). Dept. of Materials Science and Engineering
Tampere Univ. of Technology (Finland). Inst. of Physics; Northeastern Univ., Boston, MA (United States). Dept. of Physics

Publication Date:: Thu Oct 27 00:00:00 EDT 2016

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States); Energy Frontier Research Centers (EFRC) (United States). Center for the Computational Design of Functional Layered Materials (CCDM)

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

OSTI Identifier:: 1347898

Alternate Identifier(s):: OSTI ID: 1330293

Report Number(s):: IS-J-9193
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1701319

Grant/Contract Number:: FG02-07ER46352; AC02-05CH11231; SC0012575; AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 94; Journal Issue: 15; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Ärrälä, Minna, Hafiz, Hasnain, Mou, Daixiang, Wu, Yun, Jiang, Rui, Riedemann, Trevor, Lograsso, Thomas A., Barbiellini, Bernardo, Kaminski, Adam, Bansil, Arun, and Lindroos, Matti. Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevB.94.155144.

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                    Ärrälä, Minna, Hafiz, Hasnain, Mou, Daixiang, Wu, Yun, Jiang, Rui, Riedemann, Trevor, Lograsso, Thomas A., Barbiellini, Bernardo, Kaminski, Adam, Bansil, Arun, & Lindroos, Matti. Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator.  United States.  https://doi.org/10.1103/PhysRevB.94.155144

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                    Ärrälä, Minna, Hafiz, Hasnain, Mou, Daixiang, Wu, Yun, Jiang, Rui, Riedemann, Trevor, Lograsso, Thomas A., Barbiellini, Bernardo, Kaminski, Adam, Bansil, Arun, and Lindroos, Matti. Thu .  
"Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator".  United States.  https://doi.org/10.1103/PhysRevB.94.155144.  https://www.osti.gov/servlets/purl/1347898.

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@article{osti_1347898,

  title        = {Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator},

  author       = {Ärrälä, Minna and Hafiz, Hasnain and Mou, Daixiang and Wu, Yun and Jiang, Rui and Riedemann, Trevor and Lograsso, Thomas A. and Barbiellini, Bernardo and Kaminski, Adam and Bansil, Arun and Lindroos, Matti},

  abstractNote = {Here, we have obtained angle-resolved photoemission (ARPES) spectra from single crystals of the topological insulator material Bi2Te3 using tunable laser spectrometer. The spectra were collected for eleven different photon energies ranging from 5.57 to 6.70 eV for incident light polarized linearly along two different in-plane directions. Parallel first-principles, fully relativistic computations of photo-intensities were carried out using the experimental geometry within the framework of the one-step model of photoemission. Good overall accord between theory and experiment is used to gain insight into how properties of the initial and final state band structures as well as those of the topological surface states and their spin-textures are reflected in the laser-ARPES spectra. In conclusion, our analysis reveals that laser-ARPES is sensitive to both the initial state kz dispersion and the presence of delicate gaps in the final state electronic spectrum.},

  doi          = {10.1103/PhysRevB.94.155144},

  journal      = {Physical Review B},

  number       = 15,

  volume       = 94,

  place        = {United States},

  year         = {Thu Oct 27 00:00:00 EDT 2016},

  month        = {Thu Oct 27 00:00:00 EDT 2016}

}

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Title: Laser angle-resolved photoemission as a probe of initial state kz dispersion, final-state band gaps, and spin texture of Dirac states in the Bi2Te3 topological insulator

Abstract

Citation Formats

Evolution of Midgap States and Residual Three Dimensionality in La 2 − x Sr x CuO 4 journal, October 2005

Topological Kondo Insulators journal, March 2010

Topological insulators and superconductors journal, October 2011

Dirac materials journal, January 2014

The theory of angle-resolved ultraviolet photoemission and its applications to ordered materials journal, October 1996

Photon energy dependence of circular dichroism of the Au(111) surface state journal, November 2013

Oscillatory surface dichroism of the insulating topological insulator Bi 2 Te 2 Se journal, October 2013

Resolving unoccupied electronic states with laser ARPES in bismuth-based cuprate superconductors journal, February 2015

Colloquium : Topological band theory journal, June 2016

Colloquium: Topological insulators journal, November 2010

High-Energy Anomaly in the Angle-Resolved Photoemission Spectra of Nd 2 − x Ce x CuO 4 : Evidence for a Matrix Element Effect journal, September 2014

Quantum interference and Aharonov–Bohm oscillations in topological insulators journal, April 2013

Search for Majorana Fermions in Superconductors journal, April 2013

E vs k → and Inverse Lifetime of Cu(110) journal, July 1979

Topological Insulator Materials journal, October 2013

A Novel Direct Method of Fermi Surface Determination Using Constant Initial Energy Angle-Scanned Photoemission Spectroscopy journal, September 1996

Inelastic Effects in Photoemission: Microscopic Formulation and Qualitative Discussion journal, November 1973

Reversal of the Circular Dichroism in Angle-Resolved Photoemission from Bi 2 Te 3 journal, May 2013

Three-dimensional topological insulators: A review on host materials journal, November 2012

Spin- and Angle-Resolved Photoemission of Strongly Spin–Orbit Coupled Systems journal, February 2013

Theory of photoemission journal, July 1976

Origin of photoemission final-state effects in Bi 2 Sr 2 CaCu 2 O 8 by very-low-energy electron diffraction journal, October 2003

An introduction to topological insulators journal, November 2013

Importance of Matrix Elements in the ARPES Spectra of BISCO journal, December 1999

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Topological materials journal, August 2012

Circular Dichroism in the Angle-Resolved Photoemission Spectrum of the High-Temperature Bi 2 Sr 2 CaCu 2 O 8 + δ Superconductor: Can These Measurements Be Interpreted as Evidence for Time-Reversal Symmetry Breaking? journal, August 2009

Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi 2 Sr 2 CaCu 2 O 8 + δ journal, January 2006

Title: Laser angle-resolved photoemission as a probe of initial state k_z dispersion, final-state band gaps, and spin texture of Dirac states in the Bi₂Te₃ topological insulator

Evolution of Midgap States and Residual Three Dimensionality in ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, October 2005

Topological Kondo Insulators
journal, March 2010

Topological insulators and superconductors
journal, October 2011

Dirac materials
journal, January 2014

The theory of angle-resolved ultraviolet photoemission and its applications to ordered materials
journal, October 1996

Photon energy dependence of circular dichroism of the Au(111) surface state
journal, November 2013

Oscillatory surface dichroism of the insulating topological insulator Bi $_{2}$ Te $_{2}$ Se
journal, October 2013

Resolving unoccupied electronic states with laser ARPES in bismuth-based cuprate superconductors
journal, February 2015

Colloquium : Topological band theory
journal, June 2016

Colloquium: Topological insulators
journal, November 2010

High-Energy Anomaly in the Angle-Resolved Photoemission Spectra of ${Nd}_{2 - x} {Ce}_{x} {CuO}_{4}$ : Evidence for a Matrix Element Effect
journal, September 2014

Quantum interference and Aharonov–Bohm oscillations in topological insulators
journal, April 2013

Search for Majorana Fermions in Superconductors
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$E$ vs $\vec{k}$ and Inverse Lifetime of Cu(110)
journal, July 1979

Topological Insulator Materials
journal, October 2013

A Novel Direct Method of Fermi Surface Determination Using Constant Initial Energy Angle-Scanned Photoemission Spectroscopy
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Inelastic Effects in Photoemission: Microscopic Formulation and Qualitative Discussion
journal, November 1973

Reversal of the Circular Dichroism in Angle-Resolved Photoemission from ${Bi}_{2} {Te}_{3}$
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Three-dimensional topological insulators: A review on host materials
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Theory of photoemission
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Origin of photoemission final-state effects in ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8}$ by very-low-energy electron diffraction
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