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Title: Evolution of the Fermi surface of Weyl semimetals in the transition metal pnictide family

Journal Article · · Nature Materials
DOI: https://doi.org/10.1038/nmat4457 · OSTI ID:1530220
 [1];  [2];  [3];  [4];  [5];  [6];  [5]; ORCiD logo [7];  [8];  [5];  [3];  [7]; ORCiD logo [7];  [3];  [9];  [10]
  1. ShanghaiTech Univ. (China); Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Science Research Center; Science and Technology Facilities Council (STFC), Harwell Campus, Oxford (United Kingdom). Diamond Light Source, Ltd.
  2. Tsinghua Univ., Beijing (China); Oxford Univ. (United Kingdom); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  4. Tsinghua Univ., Beijing (China); Oxford Univ. (United Kingdom)
  5. Oxford Univ. (United Kingdom)
  6. Oxford Univ. (United Kingdom); Chinese Academy of Sciences (CAS), Shanghai (China)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  8. ShanghaiTech Univ. (China); Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Science Research Center; Oxford Univ. (United Kingdom)
  9. ShanghaiTech Univ. (China); Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Science Research Center; Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  10. ShanghaiTech Univ. (China); Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Science Research Center; Science and Technology Facilities Council (STFC), Harwell Campus, Oxford (United Kingdom). Diamond Light Source, Ltd.; Tsinghua Univ., Beijing (China); Oxford Univ. (United Kingdom)

Topological Weyl semimetals (TWSs) represent a novel state of topological quantum matter which not only possesses Weyl fermions (massless chiral particles that can be viewed as magnetic monopoles in momentum space) in the bulk and unique Fermi arcs generated by topological surface states, but also exhibits appealing physical properties such as extremely large magnetoresistance and ultra-high carrier mobility. Here, by performing angle-resolved photoemission spectroscopy (ARPES) on NbP and TaP, we directly observed their band structures with characteristic Fermi arcs of TWSs. Furthermore, by systematically investigating NbP, TaP and TaAs from the same transition metal monopnictide family, we discovered their Fermiology evolution with spin-orbit coupling (SOC) strength. Our experimental findings not only reveal the mechanism to realize and fine-tune the electronic structures of TWSs, but also provide a rich material base for exploring many exotic physical phenomena (for example, chiral magnetic effects, negative magnetoresistance, and the quantum anomalous Hall effect) and novel future applications.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1530220
Journal Information:
Nature Materials, Journal Name: Nature Materials Journal Issue: 1 Vol. 15; ISSN 1476-1122
Publisher:
Springer Nature - Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Visualizing weakly bound surface Fermi arcs and their correspondence to bulk Weyl fermions journal August 2016
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Realization of interlayer ferromagnetic interaction in MnS b 2 T e 4 toward the magnetic Weyl semimetal state journal November 2019
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Quantum oscillations and the Fermi surface topology of the Weyl semimetal NbP journal March 2016
Bulk electronic, elastic, structural, and dielectric properties of the Weyl semimetal TaAs journal March 2016
Observation of pseudo-two-dimensional electron transport in the rock salt-type topological semimetal LaBi journal June 2016
Resistivity plateau and extremely large magnetoresistance in NbAs 2 and TaAs 2 journal July 2016
Topological density-wave states in a particle-hole symmetric Weyl metal journal August 2016
Topological Dirac semimetal phase in Pd and Pt oxides journal January 2017
Minimal models for topological Weyl semimetals journal February 2017
Photogalvanic effect in Weyl semimetals journal August 2017
Semiclassical theory of anomalous transport in type-II topological Weyl semimetals journal December 2017
Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti 2 MnAl journal February 2018
Universal scattering response across the type-II Weyl semimetal phase diagram journal February 2018
Dynamics of out-of-equilibrium electron and hole pockets in the type-II Weyl semimetal candidate WTe 2 journal March 2018
Topological surface Fermi arcs in the magnetic Weyl semimetal Co 3 Sn 2 S 2 journal June 2018
Coupled wire models of interacting Dirac nodal superconductors journal November 2018
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Anomalous Nernst effect and field-induced Lifshitz transition in the Weyl semimetals TaP and TaAs journal November 2018
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Strong Intrinsic Spin Hall Effect in the TaAs Family of Weyl Semimetals journal September 2016
Distinct Electronic Structure for the Extreme Magnetoresistance in YSb journal December 2016
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Orbital Fingerprint of Topological Fermi Arcs in the Weyl Semimetal TaP journal March 2019
Tracking Ultrafast Photocurrents in the Weyl Semimetal TaAs Using THz Emission Spectroscopy journal May 2019
Large Contribution of Fermi Arcs to the Conductivity of Topological Metals journal August 2019
Quantum oscillations and coherent interlayer transport in a new topological Dirac semimetal candidate YbMnSb 2 journal February 2018
Topological phonons and thermoelectricity in triple-point metals journal November 2018
Surface superconductivity on Weyl semimetal induced by nonmagnetic and ferromagnetic tips journal December 2019
Orbital effect and weak localization in the longitudinal magnetoresistance of Weyl semimetals NbP, NbAs, TaP, and TaAs journal March 2020
From Dirac Semimetals to Topological Phases in Three Dimensions: A Coupled-Wire Construction journal February 2019
Weyl and Dirac semimetals in three-dimensional solids journal January 2018
Visualizing weakly bound surface Fermi arcs and their correspondence to bulk Weyl fermions journal August 2016
Quasiparticle interference evidence of the topological Fermi arc states in chiral fermionic semimetal CoSi journal December 2019
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Creating stable Floquet–Weyl semimetals by laser-driving of 3D Dirac materials text January 2017
Growth and Strain Engineering of Trigonal Te for Topological Quantum Phases in Non-Symmorphic Chiral Crystals journal September 2019
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Topological Semimetals Predicted from First-principles Calculations text January 2016
Comparative Raman study of Weyl semimetals TaAs, NbAs, TaP and NbP text January 2016
Spectroscopic evidence for type II Weyl semimetal state in MoTe2 text January 2016
Anomalous Hall effect in Weyl semimetal half Heusler compounds RPtBi (R = Gd and Nd) text January 2016
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Weyl and Dirac Semimetals in Three Dimensional Solids text January 2017
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Symmetry Demanded Topological Nodal-line Materials text January 2017
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