High Fermi velocities and small cyclotron masses in LaAlGe

Hu, Zhixiang; Du, Qianheng; Liu, Yu; Graf, D.; Petrovic, Cedomir

doi:10.1063/5.0035445

Title: High Fermi velocities and small cyclotron masses in LaAlGe

Abstract

Here, we report quantum oscillation measurements of LaAlGe, a Lorentz-violating type-II Weyl semimetal with tilted Weyl cones. Very small quasiparticle masses and very high Fermi velocities were detected at the Fermi surface. Whereas three main frequencies have been observed, the angular dependence of two Fermi surface sheets indicates possible two-dimensional (2D) character despite the absence of the 2D structural features such as van der Waals bonds. Such conducting states may offer a good platform for low-dimensional polarized spin current in magnetic RAlGe (R = Ce, Pr) materials.

Authors:

Hu, Zhixiang ^[1]; Du, Qianheng ^[1]; Liu, Yu ^[2]; Graf, D. ^[3];

^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Florida State Univ., Tallahassee, FL (United States)

Publication Date:: Mon Nov 30 00:00:00 EST 2020

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

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

OSTI Identifier:: 1756295

Alternate Identifier(s):: OSTI ID: 1730963

Report Number(s):: BNL-220770-2021-JAAM
Journal ID: ISSN 0003-6951; TRN: US2205618

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 117; Journal Issue: 22; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Hu, Zhixiang, Du, Qianheng, Liu, Yu, Graf, D., and Petrovic, Cedomir. High Fermi velocities and small cyclotron masses in LaAlGe.  United States: N. p., 2020. 
Web.  doi:10.1063/5.0035445.

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                    Hu, Zhixiang, Du, Qianheng, Liu, Yu, Graf, D., & Petrovic, Cedomir. High Fermi velocities and small cyclotron masses in LaAlGe.  United States.  https://doi.org/10.1063/5.0035445

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                    Hu, Zhixiang, Du, Qianheng, Liu, Yu, Graf, D., and Petrovic, Cedomir. Mon .  
"High Fermi velocities and small cyclotron masses in LaAlGe".  United States.  https://doi.org/10.1063/5.0035445.  https://www.osti.gov/servlets/purl/1756295.

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@article{osti_1756295,

  title        = {High Fermi velocities and small cyclotron masses in LaAlGe},

  author       = {Hu, Zhixiang and Du, Qianheng and Liu, Yu and Graf, D. and Petrovic, Cedomir},

  abstractNote = {Here, we report quantum oscillation measurements of LaAlGe, a Lorentz-violating type-II Weyl semimetal with tilted Weyl cones. Very small quasiparticle masses and very high Fermi velocities were detected at the Fermi surface. Whereas three main frequencies have been observed, the angular dependence of two Fermi surface sheets indicates possible two-dimensional (2D) character despite the absence of the 2D structural features such as van der Waals bonds. Such conducting states may offer a good platform for low-dimensional polarized spin current in magnetic RAlGe (R = Ce, Pr) materials.},

  doi          = {10.1063/5.0035445},

  journal      = {Applied Physics Letters},

  number       = 22,

  volume       = 117,

  place        = {United States},

  year         = {Mon Nov 30 00:00:00 EST 2020},

  month        = {Mon Nov 30 00:00:00 EST 2020}

}

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Title: High Fermi velocities and small cyclotron masses in LaAlGe

Abstract

Citation Formats

Photocurrents in Weyl semimetals journal, January 2017

Dirac materials journal, January 2014

Synthesis, characterization, electronic structure, and phonon properties of the noncentrosymmetric superconductor LaPtSi journal, September 2013

Large magnetoresistance in the type-II Weyl semimetal WP 2 journal, September 2017

Dielectric response and novel electromagnetic modes in three-dimensional Dirac semimetal films journal, June 2016

When Chiral Photons Meet Chiral Fermions: Photoinduced Anomalous Hall Effects in Weyl Semimetals journal, January 2016

Type-II Weyl semimetals journal, November 2015

Large, non-saturating magnetoresistance in WTe2 journal, September 2014

Dynamic current-current susceptibility in three-dimensional Dirac and Weyl semimetals journal, January 2018

Quantum transport in Dirac materials: Signatures of tilted and anisotropic Dirac and Weyl cones journal, March 2015

An ultrafast symmetry switch in a Weyl semimetal journal, January 2019

Topological Materials: Weyl Semimetals journal, March 2017

A Wide-Range Photosensitive Weyl Semimetal Single Crystal-TaAs journal, September 2018

Colloquium: Topological insulators journal, November 2010

Elektron und Gravitation. I journal, May 1929

Discovery of Lorentz-violating type II Weyl fermions in LaAlGe journal, June 2017

All-electric magnetization switching and Dzyaloshinskii–Moriya interaction in WTe2/ferromagnet heterostructures journal, August 2019

Topology and Interactions in a Frustrated Slab: Tuning from Weyl Semimetals to C > 1 Fractional Chern Insulators journal, January 2015

Magnetic and noncentrosymmetric Weyl fermion semimetals in the R AlGe family of compounds ( R = rare earth ) journal, January 2018

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Evidence of Topological Nodal-Line Fermions in ZrSiSe and ZrSiTe journal, June 2016

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Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe 2 journal, May 2019

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Shubnikov–de Haas and de Haas–van Alphen oscillations in the topological semimetal CaAl 4 journal, March 2019

Experimental Discovery of Weyl Semimetal TaAs journal, July 2015

Generating controllable type-II Weyl points via periodic driving journal, December 2016

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Weyl Semimetals as Hydrogen Evolution Catalysts journal, March 2017

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Plasmonic Nanolasers Enhanced by Hybrid Graphene–Insulator–Metal Structures journal, July 2019

Helicity-protected ultrahigh mobility Weyl fermions in NbP journal, March 2016

Structure of YAlGe and isotypic rare-earth–aluminium germanides journal, December 1990

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Molecular beam epitaxy growth of nonmagnetic Weyl semimetal LaAlGe thin film journal, April 2020

Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates journal, May 2011

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An ultrafast symmetry switch in a Weyl semimetal
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Colloquium: Topological insulators
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Elektron und Gravitation. I
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Discovery of Lorentz-violating type II Weyl fermions in LaAlGe
journal, June 2017

All-electric magnetization switching and Dzyaloshinskii–Moriya interaction in WTe2/ferromagnet heterostructures
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Topology and Interactions in a Frustrated Slab: Tuning from Weyl Semimetals to $C > 1$ Fractional Chern Insulators
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Magnetic and noncentrosymmetric Weyl fermion semimetals in the $R AlGe$ family of compounds ( $R = rare earth$ )
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Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas–van Alphen quantum oscillations
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Evidence of Topological Nodal-Line Fermions in ZrSiSe and ZrSiTe
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Shubnikov–de Haas and de Haas–van Alphen oscillations in the topological semimetal ${CaAl}_{4}$
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Generating controllable type-II Weyl points via periodic driving
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Helicity-protected ultrahigh mobility Weyl fermions in NbP
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Structure of YAlGe and isotypic rare-earth–aluminium germanides
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Renormalization of Coulomb interactions in a system of two-dimensional tilted Dirac fermions
journal, January 2018

Molecular beam epitaxy growth of nonmagnetic Weyl semimetal LaAlGe thin film
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