skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiple Types of Topological Fermions in Transition Metal Silicides

Abstract

Exotic massless fermionic excitations with nonzero Berry flux, other than the Dirac and Weyl fermions, could exist in condensed matter systems under the protection of crystalline symmetries, such as spin-1 excitations with threefold degeneracy and spin-3/2 Rarita-Schwinger-Weyl fermions. Herein, by using the ab initio density functional theory, we show that these unconventional quasiparticles coexist with type-I and type-II Weyl fermions in a family of transition metal silicides, including CoSi, RhSi, RhGe, and CoGe, when spin-orbit coupling is considered. Their nontrivial topology results in a series of extensive Fermi arcs connecting projections of these bulk excitations on the side surface, which is confirmed by (001) surface electronic spectra of CoSi. Additionally, these stable arc states exist within a wide energy window around the Fermi level, which makes them readily accessible in angle-resolved photoemission spectroscopy measurements.

Authors:
 [1];  [1];  [2]
  1. Stanford Univ., Stanford, CA (United States)
  2. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1418206
Alternate Identifier(s):
OSTI ID: 1409233
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 20; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Tang, Peizhe, Zhou, Quan, and Zhang, Shou -Cheng. Multiple Types of Topological Fermions in Transition Metal Silicides. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.206402.
Tang, Peizhe, Zhou, Quan, & Zhang, Shou -Cheng. Multiple Types of Topological Fermions in Transition Metal Silicides. United States. doi:10.1103/PhysRevLett.119.206402.
Tang, Peizhe, Zhou, Quan, and Zhang, Shou -Cheng. Fri . "Multiple Types of Topological Fermions in Transition Metal Silicides". United States. doi:10.1103/PhysRevLett.119.206402. https://www.osti.gov/servlets/purl/1418206.
@article{osti_1418206,
title = {Multiple Types of Topological Fermions in Transition Metal Silicides},
author = {Tang, Peizhe and Zhou, Quan and Zhang, Shou -Cheng},
abstractNote = {Exotic massless fermionic excitations with nonzero Berry flux, other than the Dirac and Weyl fermions, could exist in condensed matter systems under the protection of crystalline symmetries, such as spin-1 excitations with threefold degeneracy and spin-3/2 Rarita-Schwinger-Weyl fermions. Herein, by using the ab initio density functional theory, we show that these unconventional quasiparticles coexist with type-I and type-II Weyl fermions in a family of transition metal silicides, including CoSi, RhSi, RhGe, and CoGe, when spin-orbit coupling is considered. Their nontrivial topology results in a series of extensive Fermi arcs connecting projections of these bulk excitations on the side surface, which is confirmed by (001) surface electronic spectra of CoSi. Additionally, these stable arc states exist within a wide energy window around the Fermi level, which makes them readily accessible in angle-resolved photoemission spectroscopy measurements.},
doi = {10.1103/PhysRevLett.119.206402},
journal = {Physical Review Letters},
number = 20,
volume = 119,
place = {United States},
year = {2017},
month = {11}
}

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

Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Chiral topological superconductor and half-integer conductance plateau from quantum anomalous Hall plateau transition
journal, August 2015


Projector augmented-wave method
journal, December 1994


Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides X P 2 ( X = Mo , W)
journal, August 2016


High-pressure synthesis and electrical and magnetic properties of MnGe and CoGe with the cubic B20 structure
journal, March 1988


Type-II Weyl points in three-dimensional cold-atom optical lattices
journal, November 2016


Three-dimensional Dirac semimetal and quantum transport in Cd 3 As 2
journal, September 2013


Observation of Fermi arc surface states in a topological metal
journal, December 2014


Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide
journal, August 2015

  • Xu, Su-Yang; Alidoust, Nasser; Belopolski, Ilya
  • Nature Physics, Vol. 11, Issue 9
  • DOI: 10.1038/nphys3437

wannier90: A tool for obtaining maximally-localised Wannier functions
journal, May 2008

  • Mostofi, Arash A.; Yates, Jonathan R.; Lee, Young-Su
  • Computer Physics Communications, Vol. 178, Issue 9
  • DOI: 10.1016/j.cpc.2007.11.016

A strongly robust type II Weyl fermion semimetal state in Ta 3 S 2
journal, June 2016

  • Chang, Guoqing; Xu, Su-Yang; Sanchez, Daniel S.
  • Science Advances, Vol. 2, Issue 6
  • DOI: 10.1126/sciadv.1600295

From ultrasoft pseudopotentials to the projector augmented-wave method
journal, January 1999


Experimental signatures of the mixed axial–gravitational anomaly in the Weyl semimetal NbP
journal, July 2017

  • Gooth, Johannes; Niemann, Anna C.; Meng, Tobias
  • Nature, Vol. 547, Issue 7663
  • DOI: 10.1038/nature23005

Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
journal, September 2016

  • Deng, Ke; Wan, Guoliang; Deng, Peng
  • Nature Physics, Vol. 12, Issue 12
  • DOI: 10.1038/nphys3871

Existence of bulk chiral fermions and crystal symmetry
journal, April 2012


Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
journal, January 1998

  • Dudarev, S. L.; Botton, G. A.; Savrasov, S. Y.
  • Physical Review B, Vol. 57, Issue 3, p. 1505-1509
  • DOI: 10.1103/PhysRevB.57.1505

MoTe 2 : A Type-II Weyl Topological Metal
journal, July 2016


On a Theory of Particles with Half-Integral Spin
journal, July 1941


Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides
journal, March 2015


Strong Intrinsic Spin Hall Effect in the TaAs Family of Weyl Semimetals
journal, September 2016


Chiral Majorana fermion modes in a quantum anomalous Hall insulator–superconductor structure
journal, July 2017


Experimental Discovery of Weyl Semimetal TaAs
journal, July 2015


The polymorphism of transition metal monogermanides at high pressures and temperatures
journal, September 1982


Evolution of the Fermi surface of Weyl semimetals in the transition metal pnictide family
journal, November 2015

  • Liu, Z. K.; Yang, L. X.; Sun, Y.
  • Nature Materials, Vol. 15, Issue 1
  • DOI: 10.1038/nmat4457

The Coexistence of Superconductivity and Topological Order in the Bi 2 Se 3 Thin Films
journal, March 2012


A no-go theorem for regularizing chiral fermions
journal, October 1981


Observation of Weyl nodes in TaAs
journal, August 2015

  • Lv, B. Q.; Xu, N.; Weng, H. M.
  • Nature Physics, Vol. 11, Issue 9
  • DOI: 10.1038/nphys3426

Topological surface states and Fermi arcs of the noncentrosymmetric Weyl semimetals TaAs, TaP, NbAs, and NbP
journal, September 2015


Weyl semimetal phase in the non-centrosymmetric compound TaAs
journal, August 2015

  • Yang, L. X.; Liu, Z. K.; Sun, Y.
  • Nature Physics, Vol. 11, Issue 9
  • DOI: 10.1038/nphys3425

Unconventional Chiral Fermions and Large Topological Fermi Arcs in RhSi
journal, November 2017


TaIrTe 4 : A ternary type-II Weyl semimetal
journal, May 2016


Topological semimetals with triply degenerate nodal points in θ -phase tantalum nitride
journal, June 2016


Spectroscopic evidence for a type II Weyl semimetallic state in MoTe2
journal, July 2016

  • Huang, Lunan; McCormick, Timothy M.; Ochi, Masayuki
  • Nature Materials, Vol. 15, Issue 11
  • DOI: 10.1038/nmat4685

Coexistence of Weyl fermion and massless triply degenerate nodal points
journal, October 2016


Type-II Weyl semimetals
journal, November 2015

  • Soluyanov, Alexey A.; Gresch, Dominik; Wang, Zhijun
  • Nature, Vol. 527, Issue 7579
  • DOI: 10.1038/nature15768

The crystal structure of rhodium silicide, RhSi
journal, May 1954


Structured Weyl Points in Spin-Orbit Coupled Fermionic Superfluids
journal, December 2015


Gate-tunable negative longitudinal magnetoresistance in the predicted type-II Weyl semimetal WTe2
journal, October 2016

  • Wang, Yaojia; Liu, Erfu; Liu, Huimei
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms13142

Composite Weyl nodes stabilized by screw symmetry with and without time-reversal invariance
journal, July 2017


Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996


Dirac, Majorana, and Weyl fermions
journal, May 2011

  • Pal, Palash B.
  • American Journal of Physics, Vol. 79, Issue 5
  • DOI: 10.1119/1.3549729

Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi
journal, January 2014


Magnetic properties of Co1−xFexSi, Co1−xMnxSi, and Fe1−xMnxSi solid solutions
journal, May 1972


Double Dirac Semimetals in Three Dimensions
journal, May 2016


Discovery of a Weyl fermion semimetal and topological Fermi arcs
journal, July 2015


Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1−xTe2
journal, February 2016

  • Chang, Tay-Rong; Xu, Su-Yang; Chang, Guoqing
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms10639

Dirac semimetal and topological phase transitions in A 3 Bi ( A = Na , K, Rb)
journal, May 2012


Observation of three-component fermions in the topological semimetal molybdenum phosphide
journal, June 2017


Semimetal with both Rarita-Schwinger-Weyl and Weyl excitations
journal, January 2016


Prediction of Weyl semimetal in orthorhombic MoTe 2
journal, October 2015


Multi-Weyl Topological Semimetals Stabilized by Point Group Symmetry
journal, June 2012


Dirac fermions in an antiferromagnetic semimetal
journal, August 2016

  • Tang, Peizhe; Zhou, Quan; Xu, Gang
  • Nature Physics, Vol. 12, Issue 12
  • DOI: 10.1038/nphys3839

Observation of large topologically trivial Fermi arcs in the candidate type-II Weyl semimetal WT e 2
journal, September 2016


Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor
journal, October 2014


Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
journal, July 2016


Studying the magnetic properties of CoSi single crystals
journal, May 2013

  • Narozhnyi, V. N.; Krasnorussky, V. N.
  • Journal of Experimental and Theoretical Physics, Vol. 116, Issue 5
  • DOI: 10.1134/S106377611305021X

Data Mining for Three-Dimensional Organic Dirac Materials: Focus on Space Group 19
journal, August 2017

  • Geilhufe, R. Matthias; Borysov, Stanislav S.; Bouhon, Adrien
  • Scientific Reports, Vol. 7, Issue 1
  • DOI: 10.1038/s41598-017-07374-7

A stable three-dimensional topological Dirac semimetal Cd3As2
journal, May 2014

  • Liu, Z. K.; Jiang, J.; Zhou, B.
  • Nature Materials, Vol. 13, Issue 7
  • DOI: 10.1038/nmat3990

Triple Point Topological Metals
journal, July 2016


A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class
journal, June 2015

  • Huang, Shin-Ming; Xu, Su-Yang; Belopolski, Ilya
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8373

    Works referencing / citing this record:

    Silicide Thermoelectrics: Materials for Energy Harvesting
    journal, June 2018


    Silicide Thermoelectrics: Materials for Energy Harvesting
    journal, June 2018


    Linear optical conductivity of chiral multifold fermions
    journal, April 2019

    • Sánchez-Martínez, Miguel-Ángel; de Juan, Fernando; Grushin, Adolfo G.
    • Physical Review B, Vol. 99, Issue 15
    • DOI: 10.1103/physrevb.99.155145