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Title: Topological surface states above the Fermi level in Hf 2 Te 2 P

Abstract

We report a detailed experimental study of the band structure of the recently discovered topological material Hf2Te2P. Using the combination of scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy with surface K doping, we probe the band structure of Hf2Te2P with energy and momentum resolution above the Fermi level. Our experiments show the presence of multiple surface states with a linear Dirac-like dispersion, consistent with the predictions from previously reported band-structure calculations. In particular, scanning tunneling spectroscopy measurements provide experimental evidence for the strong topological surface state predicted at 460 meV, which stems from the band inversion between Hf-d and Te-p orbitals. As a result, this band inversion comprised of more localized d states could result in a better surface-to-bulk conductance ratio relative to more traditional topological insulators.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [3];  [3];  [3];  [1];  [1];  [1]
  1. Univ. of California, Davis, CA (United States)
  2. Univ. of California, Davis, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1574335
Alternate Identifier(s):
OSTI ID: 1556824
Grant/Contract Number:  
AC02-05CH11231; PHY-1560482
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 100; Journal Issue: 8; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Boyle, T. J., Rossi, A., Walker, M., Carlson, P., Miller, M. K., Zhao, J., Klavins, P., Jozwiak, C., Bostwick, A., Rotenberg, E., Taufour, V., Vishik, I. M., and da Silva Neto, E. H. Topological surface states above the Fermi level in Hf2Te2P. United States: N. p., 2019. Web. https://doi.org/10.1103/physrevb.100.081105.
Boyle, T. J., Rossi, A., Walker, M., Carlson, P., Miller, M. K., Zhao, J., Klavins, P., Jozwiak, C., Bostwick, A., Rotenberg, E., Taufour, V., Vishik, I. M., & da Silva Neto, E. H. Topological surface states above the Fermi level in Hf2Te2P. United States. https://doi.org/10.1103/physrevb.100.081105
Boyle, T. J., Rossi, A., Walker, M., Carlson, P., Miller, M. K., Zhao, J., Klavins, P., Jozwiak, C., Bostwick, A., Rotenberg, E., Taufour, V., Vishik, I. M., and da Silva Neto, E. H. Mon . "Topological surface states above the Fermi level in Hf2Te2P". United States. https://doi.org/10.1103/physrevb.100.081105. https://www.osti.gov/servlets/purl/1574335.
@article{osti_1574335,
title = {Topological surface states above the Fermi level in Hf2Te2P},
author = {Boyle, T. J. and Rossi, A. and Walker, M. and Carlson, P. and Miller, M. K. and Zhao, J. and Klavins, P. and Jozwiak, C. and Bostwick, A. and Rotenberg, E. and Taufour, V. and Vishik, I. M. and da Silva Neto, E. H.},
abstractNote = {We report a detailed experimental study of the band structure of the recently discovered topological material Hf2Te2P. Using the combination of scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy with surface K doping, we probe the band structure of Hf2Te2P with energy and momentum resolution above the Fermi level. Our experiments show the presence of multiple surface states with a linear Dirac-like dispersion, consistent with the predictions from previously reported band-structure calculations. In particular, scanning tunneling spectroscopy measurements provide experimental evidence for the strong topological surface state predicted at 460 meV, which stems from the band inversion between Hf-d and Te-p orbitals. As a result, this band inversion comprised of more localized d states could result in a better surface-to-bulk conductance ratio relative to more traditional topological insulators.},
doi = {10.1103/physrevb.100.081105},
journal = {Physical Review B},
number = 8,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1 FIG. 1: (a) Crystal structure of Hf2Te2P. (b) STM topography taken at −120 mV sample bias and 700 pA current setpoint. (c) Fermi surface of pristine sample measured by ARPES. (d) STS measured dI/dV spectrum with current and bias set points of 450 pA and −1.5 V.

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Works referenced in this record:

Chemistry and Physical Properties of the Phosphide Telluride Zr 2 PTe 2
journal, July 2009

  • Tschulik, Kristina; Ruck, Michael; Binnewies, Michael
  • European Journal of Inorganic Chemistry, Vol. 2009, Issue 21
  • DOI: 10.1002/ejic.200900346

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

  • Roushan, Pedram; Seo, Jungpil; Parker, Colin V.
  • Nature, Vol. 460, Issue 7259, p. 1106-1109
  • DOI: 10.1038/nature08308

Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy
journal, December 2015


Strong topological metal material with multiple Dirac cones
journal, January 2016


Topological insulators and superconductors
journal, October 2011


Weyl and Dirac semimetals in three-dimensional solids
journal, January 2018


Distinct multiple fermionic states in a single topological metal
journal, August 2018


Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+δ
journal, July 2002


Topological antiferromagnetic spintronics
journal, March 2018


In situ doping control of the surface of high-temperature superconductors
journal, June 2008

  • Hossain, M. A.; Mottershead, J. D. F.; Fournier, D.
  • Nature Physics, Vol. 4, Issue 7
  • DOI: 10.1038/nphys998

Spectroscopic Imaging of Strongly Correlated Electronic States
journal, March 2016


Topological insulators with inversion symmetry
journal, July 2007


Quasiparticle scattering interference in high-temperature superconductors
journal, January 2003


Uncovering the behavior of Hf 2 Te 2 P and the candidate Dirac metal Zr 2 Te 2 P
journal, March 2016


Colloquium: Topological insulators
journal, November 2010


Quasiparticle interference of the Fermi arcs and surface-bulk connectivity of a Weyl semimetal
journal, March 2016


Mapping the unconventional orbital texture in topological crystalline insulators
journal, July 2014

  • Zeljkovic, Ilija; Okada, Yoshinori; Huang, Cheng-Yi
  • Nature Physics, Vol. 10, Issue 8
  • DOI: 10.1038/nphys3012

Transmission of topological surface states through surface barriers
journal, July 2010

  • Seo, Jungpil; Roushan, Pedram; Beidenkopf, Haim
  • Nature, Vol. 466, Issue 7304, p. 343-346
  • DOI: 10.1038/nature09189

New directions in the pursuit of Majorana fermions in solid state systems
journal, June 2012


Quasiparticle interference and nonsymmorphic effect on a floating band surface state of ZrSiSe
journal, October 2018


Topological Insulator Materials
journal, October 2013

  • Ando, Yoichi
  • Journal of the Physical Society of Japan, Vol. 82, Issue 10, Article No. 102001
  • DOI: 10.7566/JPSJ.82.102001

Symmetry demanded topological nodal-line materials
journal, January 2018


The d-p band-inversion topological insulator in bismuth-based skutterudites
journal, May 2014

  • Yang, Ming; Liu, Wu-Ming
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep05131

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.