Optical signatures of Dirac nodal lines in NbAs 2

Shao, Yinming; Sun, Zhiyuan; Wang, Ying; Xu, Chenchao; Sankar, Raman; Breindel, Alexander J.; Cao, Chao; Fogler, Michael M.; Millis, Andrew J.; Chou, Fangcheng; Li, Zhiqiang; Timusk, Thomas; Maple, M. Brian; Basov, D. N.

doi:10.1073/pnas.1809631115

Title: Optical signatures of Dirac nodal lines in NbAs ₂

Abstract

Using polarized optical and magneto-optical spectroscopy, we have demonstrated universal aspects of electrodynamics associated with Dirac nodal lines that are found in several classes of unconventional intermetallic compounds. We investigated anisotropic electrodynamics of ${N b A s}_{2}$ where the spin-orbit coupling (SOC) triggers energy gaps along the nodal lines. These gaps manifest as sharp steps in the optical conductivity spectra $σ_{1} (ω)$ . This behavior is followed by the linear power-law scaling of $σ_{1} (ω)$ at higher frequencies, consistent with our theoretical analysis for dispersive Dirac nodal lines. Magneto-optics data affirm the dominant role of nodal lines in the electrodynamics of ${N b A s}_{2}$ .

Publication Date:: Mon Dec 17 00:00:00 EST 2018

Research Org.:: Univ. of California, San Diego, CA (United States)

Sponsoring Org.:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; US Army Research Office (ARO); Moore Foundation; Ministry of Science and Technology in Taiwan; National Science Foundation (NSF)

OSTI Identifier:: 1487292

Alternate Identifier(s):: OSTI ID: 1609539

Grant/Contract Number:: FG02-04-ER46105; FG02-04ER46105; W911NF17-1-0543; GBMF4533; 106-2119-M-002-035-MY3; DMR-1157490

Resource Type:: Published Article

Journal Name:: Proceedings of the National Academy of Sciences of the United States of America

Additional Journal Information:: Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 116 Journal Issue: 4; Journal ID: ISSN 0027-8424

Publisher:: National Academy of Sciences

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; nodal-line semimetal; optical conductivity; magneto-optics; Dirac fermions

Citation Formats


                    Shao, Yinming, Sun, Zhiyuan, Wang, Ying, Xu, Chenchao, Sankar, Raman, Breindel, Alexander J., Cao, Chao, Fogler, Michael M., Millis, Andrew J., Chou, Fangcheng, Li, Zhiqiang, Timusk, Thomas, Maple, M. Brian, and Basov, D. N. Optical signatures of Dirac nodal lines in NbAs 2.  United States: N. p., 2018. 
Web.  doi:10.1073/pnas.1809631115.

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                    Shao, Yinming, Sun, Zhiyuan, Wang, Ying, Xu, Chenchao, Sankar, Raman, Breindel, Alexander J., Cao, Chao, Fogler, Michael M., Millis, Andrew J., Chou, Fangcheng, Li, Zhiqiang, Timusk, Thomas, Maple, M. Brian, & Basov, D. N. Optical signatures of Dirac nodal lines in NbAs 2.  United States.  https://doi.org/10.1073/pnas.1809631115

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                    Shao, Yinming, Sun, Zhiyuan, Wang, Ying, Xu, Chenchao, Sankar, Raman, Breindel, Alexander J., Cao, Chao, Fogler, Michael M., Millis, Andrew J., Chou, Fangcheng, Li, Zhiqiang, Timusk, Thomas, Maple, M. Brian, and Basov, D. N. Mon .  
"Optical signatures of Dirac nodal lines in NbAs 2".  United States.  https://doi.org/10.1073/pnas.1809631115.

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@article{osti_1487292,

  title        = {Optical signatures of Dirac nodal lines in NbAs 2},

  author       = {Shao, Yinming and Sun, Zhiyuan and Wang, Ying and Xu, Chenchao and Sankar, Raman and Breindel, Alexander J. and Cao, Chao and Fogler, Michael M. and Millis, Andrew J. and Chou, Fangcheng and Li, Zhiqiang and Timusk, Thomas and Maple, M. Brian and Basov, D. N.},

  abstractNote = {Using polarized optical and magneto-optical spectroscopy, we have demonstrated universal aspects of electrodynamics associated with Dirac nodal lines that are found in several classes of unconventional intermetallic compounds. We investigated anisotropic electrodynamics of N b A s 2 where the spin-orbit coupling (SOC) triggers energy gaps along the nodal lines. These gaps manifest as sharp steps in the optical conductivity spectra σ 1 ( ω ) . This behavior is followed by the linear power-law scaling of σ 1 ( ω ) at higher frequencies, consistent with our theoretical analysis for dispersive Dirac nodal lines. Magneto-optics data affirm the dominant role of nodal lines in the electrodynamics of N b A s 2 .},

  doi          = {10.1073/pnas.1809631115},

  journal      = {Proceedings of the National Academy of Sciences of the United States of America},

  number       = 4,

  volume       = 116,

  place        = {United States},

  year         = {Mon Dec 17 00:00:00 EST 2018},

  month        = {Mon Dec 17 00:00:00 EST 2018}

}

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Title: Optical signatures of Dirac nodal lines in NbAs 2

Abstract

Citation Formats

Anisotropic electrodynamics of type-II Weyl semimetal candidate WTe 2 journal, June 2017

Dirac charge dynamics in graphene by infrared spectroscopy journal, June 2008

Weyl rings and enhanced susceptibilities in pyrochlore iridates: k · p analysis of cluster dynamical mean-field theory results journal, November 2017

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Topological semimetals predicted from first-principles calculations journal, June 2016

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

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Tunable point nodes from line-node semimetals via application of light journal, July 2016

Fermi surface topology and negative longitudinal magnetoresistance observed in the semimetal NbAs 2 journal, May 2016

Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP journal, December 2015

Topological nodal semimetals journal, December 2011

Flat Optical Conductivity in ZrSiS due to Two-Dimensional Dirac Bands journal, November 2017

Optical evidence for a Weyl semimetal state in pyrochlore Eu 2 Ir 2 O 7 journal, December 2015

Optical spectroscopy study of the three-dimensional Dirac semimetal ZrTe 5 journal, August 2015

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Optical response of a line node semimetal journal, November 2016

Dirac cone protected by non-symmorphic symmetry and three-dimensional Dirac line node in ZrSiS journal, May 2016

Transport and optics at the node in a nodal loop semimetal journal, June 2017

Charge Transport in Weyl Semimetals journal, January 2012

Observation of topological nodal fermion semimetal phase in ZrSiS journal, May 2016

Spectroscopic evidence for bulk-band inversion and three-dimensional massive Dirac fermions in ZrTe 5 journal, January 2017

Unprecedented anisotropic metallic state in undoped iron arsenide BaFe2As2 revealed by optical spectroscopy journal, July 2011

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Resistivity plateau and extremely large magnetoresistance in NbAs 2 and TaAs 2 journal, July 2016

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

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Topological nodal-line fermions in spin-orbit metal PbTaSe2 journal, February 2016

Both Electron and Hole Dirac Cone States in Ba ( FeAs ) 2 Confirmed by Magnetoresistance journal, May 2011

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Pseudospin Vortex Ring with a Nodal Line in Three Dimensions journal, January 2017

Faraday Rotation Due to Surface States in the Topological Insulator (Bi 1– x Sb x ) 2 Te 3 journal, January 2017

Hidden Weyl points in centrosymmetric paramagnetic metals journal, March 2017

Band structure of a two-dimensional Dirac semimetal from cyclotron resonance journal, October 2017

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Dirac nodal lines and induced spin Hall effect in metallic rutile oxides journal, June 2017

Landau level spectroscopy of surface states in the topological insulator Bi 0.91 Sb 0.09 via magneto-optics journal, May 2012

Correlation effects and quantum oscillations in topological nodal-loop semimetals journal, February 2017

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Carrier Scattering from Dynamical Magnetoconductivity in Quasineutral Epitaxial Graphene journal, November 2011

Electronic structures of transition metal dipnictides X P n 2 ( X = Ta , Nb; P n = P , As, Sb) journal, May 2016

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Title: Optical signatures of Dirac nodal lines in NbAs ₂

Anisotropic electrodynamics of type-II Weyl semimetal candidate ${WTe}_{2}$
journal, June 2017

Dirac charge dynamics in graphene by infrared spectroscopy
journal, June 2008

Weyl rings and enhanced susceptibilities in pyrochlore iridates: $k \cdot p$ analysis of cluster dynamical mean-field theory results
journal, November 2017

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

Low-frequency optical conductivity in graphene and in other scale-invariant two-band systems
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Interband optical conductivity of the [001]-oriented Dirac semimetal ${Cd}_{3} {As}_{2}$
journal, March 2016

Topological semimetals predicted from first-principles calculations
journal, June 2016

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

Optical and transport properties in three-dimensional Dirac and Weyl semimetals
journal, February 2016

Tunable point nodes from line-node semimetals via application of light
journal, July 2016

Fermi surface topology and negative longitudinal magnetoresistance observed in the semimetal ${NbAs}_{2}$
journal, May 2016

Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP
journal, December 2015

Topological nodal semimetals
journal, December 2011

Flat Optical Conductivity in ZrSiS due to Two-Dimensional Dirac Bands
journal, November 2017

Optical evidence for a Weyl semimetal state in pyrochlore ${Eu}_{2} {Ir}_{2} O_{7}$
journal, December 2015

Optical spectroscopy study of the three-dimensional Dirac semimetal ${ZrTe}_{5}$
journal, August 2015

Large magnetoresistance in compensated semimetals ${TaAs}_{2}$ and ${NbAs}_{2}$
journal, May 2016

Topological nature of nonlinear optical effects in solids
journal, May 2016

Anomalous electronic structure and magnetoresistance in TaAs2
journal, June 2016

Observation of Weyl nodes in TaAs
journal, August 2015

Optical response of a line node semimetal
journal, November 2016

Dirac cone protected by non-symmorphic symmetry and three-dimensional Dirac line node in ZrSiS
journal, May 2016

Transport and optics at the node in a nodal loop semimetal
journal, June 2017

Charge Transport in Weyl Semimetals
journal, January 2012

Observation of topological nodal fermion semimetal phase in ZrSiS
journal, May 2016

Spectroscopic evidence for bulk-band inversion and three-dimensional massive Dirac fermions in ZrTe ₅
journal, January 2017

Unprecedented anisotropic metallic state in undoped iron arsenide BaFe2As2 revealed by optical spectroscopy
journal, July 2011

Optical characterization of ${Bi}_{2} {Se}_{3}$ in a magnetic field: Infrared evidence for magnetoelectric coupling in a topological insulator material
journal, March 2010

Resistivity plateau and extremely large magnetoresistance in ${NbAs}_{2}$ and ${TaAs}_{2}$
journal, July 2016

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

Tunable Weyl Points in Periodically Driven Nodal Line Semimetals
journal, August 2016

Quantum magnetoresistance
journal, August 1998

Type-II Weyl cone transitions in driven semimetals
journal, September 2016

Topological nodal-line fermions in spin-orbit metal PbTaSe2
journal, February 2016

Both Electron and Hole Dirac Cone States in $Ba (FeAs)_{2}$ Confirmed by Magnetoresistance
journal, May 2011

Topological nodal line semimetals with and without spin-orbital coupling
journal, August 2015

Pseudospin Vortex Ring with a Nodal Line in Three Dimensions
journal, January 2017

Faraday Rotation Due to Surface States in the Topological Insulator (Bi _{1– x} Sb _x ) ₂ Te ₃
journal, January 2017

Hidden Weyl points in centrosymmetric paramagnetic metals
journal, March 2017

Band structure of a two-dimensional Dirac semimetal from cyclotron resonance
journal, October 2017

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

Theory of Large Intrinsic Spin Hall Effect in Iridate Semimetals
journal, May 2018

Dirac nodal lines and induced spin Hall effect in metallic rutile oxides
journal, June 2017

Landau level spectroscopy of surface states in the topological insulator Bi $_{0.91}$ Sb $_{0.09}$ via magneto-optics
journal, May 2012

Correlation effects and quantum oscillations in topological nodal-loop semimetals
journal, February 2017

Collective modes in nodal line semimetals
journal, February 2016

Topological semimetal in honeycomb lattice LnSI
journal, September 2017

Carrier Scattering from Dynamical Magnetoconductivity in Quasineutral Epitaxial Graphene
journal, November 2011

Electronic structures of transition metal dipnictides $X P n_{2}$ ( $X = Ta$ , Nb; $P n = P$ , As, Sb)
journal, May 2016

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

Electrodynamics on Fermi Cyclides in Nodal Line Semimetals
journal, October 2017