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Evidence of Topological Nodal-Line Fermions in ZrSiSe and ZrSiTe

Title: Evidence Of Topological Nodal-line Fermions In Zrsise And Zrsite.
Name(s): Hu, Jin, author
Tang, Zhijie, author
Liu, Jinyu, author
Liu, Xue, author
Zhu, Yanglin, author
Graf, David, author
Myhro, Kevin, author
Tran, Son, author
Lau, Chun Ning, author
Wei, Jiang, author
Mao, Zhiqiang, author
Type of Resource: text
Genre: Text
Date Issued: 2016-06-30
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: A Dirac nodal-line semimetal phase, which represents a new quantum state of topological materials, has been experimentally realized only in a few systems, including PbTaSe2, PtSn4, and ZrSiS. In this Letter, we report evidence of nodal-line fermions in ZrSiSe and ZrSiTe probed in de Haas-van Alphen quantum oscillations. Although ZrSiSe and ZrSiTe share a similar layered structure with ZrSiS, our studies show the Fermi surface (FS) enclosing a Dirac nodal line has a 2D character in ZrSiTe, in contrast with 3D-like FS in ZrSiSe and ZrSiS. Another important property revealed in our experiment is that the nodal-line fermion density in this family of materials (similar to 10(20) cm(-3)) is much higher than the Dirac fermion density of other topological materials with discrete nodes. In addition, we have demonstrated ZrSiSe and ZrSiTe single crystals can be thinned down to 2D atomic thin layers through microexfoliation, which offers the first platform to explore exotic properties of topological nodal-line fermions in low dimensions.
Identifier: FSU_libsubv1_wos_000378881300009 (IID), 10.1103/PhysRevLett.117.016602 (DOI)
Keywords: arcs, berrys phase, dirac semimetal cd3as2, discovery, hgte quantum-wells, Magnetoresistance, mobility, state, taas, transition
Publication Note: The publisher’s version of record is available at
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Host Institution: FSU
Is Part Of: Physical Review Letters.
Issue: iss. 1, vol. 117

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Hu, J., Tang, Z., Liu, J., Liu, X., Zhu, Y., Graf, D., … Mao, Z. (2016). Evidence Of Topological Nodal-line Fermions In Zrsise And Zrsite. Physical Review Letters. Retrieved from