Weyl-Kondo semimetals: Phenomena and stabilization mechanisms
ORAL · Invited
Abstract
Gapless electronic topology driven by strong correlations is an emerging field of great interest, with heavy fermion compounds at its forefront. I will report on the giant signatures of topology observed in Ce3Bi4Pd3, the material on which experiments [1,2], along with theoretical work on nonsymmorphic lattice models [3], have coined the notion of a Weyl-Kondo semimetal, and on the genuine topology control that can be achieved by magnetic field tuning, leading to the annihilation of the material’s Weyl nodes at moderate magnetic fields [4,5]. I will also discuss design strategies for further correlation-driven topological metals, and point to new candidate materials [6,7].
[1] S. Dzsaber, L. Prochaska, A. Sidorenko, G. Eguchi, R. Svagera, M. Waas, A. Prokofiev, Q. Si, and S. Paschen, Phys. Rev. Lett. 118, 246601 (2017).
[2] H.-H. Lai, S. E. Grefe, S. Paschen, and Q. Si, PNAS 115/1, 93 (2018).
[3] S. Dzsaber, X. Yan, M. Taupin, G. Eguchi, A. Prokofiev, T. Shiroka, P. Blaha, O. Rubel, S. E. Grefe, H.-H. Lai, Q. Si, and S. Paschen, PNAS 118, e2013386118 (2021).
[4] S. Dzsaber, D. A. Zocco, A. McCollam, F. Weickert, R. McDonald, M. Taupin, X. Yan, A. Prokofiev, L.M.K. Tang, B. Vlaar, L. E. Winter, M. Jaime, Q. Si, and S. Paschen, Nat. Commun. 13, 5729 (2022).
[5] S. E. Grefe, H.-H. Lai, S. Paschen, and Q. Si, arXiv:2012.15841.
[6] L. Chen, C. Setty, H. Hu, M. G. Vergniory, S. E. Grefe, L. Fischer, X. Yan, G. Eguchi, A. Prokofiev, S. Paschen, J. Cano, and Q. Si, Nat. Phys., Sept. 15 (2022), DOI:10.1038/s41567-022-01743-4.
[7] H. Hu, L. Chen, Ch. Setty, S. E. Grefe, A. Prokofiev, S. Kirchner, S. Paschen, J. Cano, and Q. Si, arXiv:2110.06182.
[1] S. Dzsaber, L. Prochaska, A. Sidorenko, G. Eguchi, R. Svagera, M. Waas, A. Prokofiev, Q. Si, and S. Paschen, Phys. Rev. Lett. 118, 246601 (2017).
[2] H.-H. Lai, S. E. Grefe, S. Paschen, and Q. Si, PNAS 115/1, 93 (2018).
[3] S. Dzsaber, X. Yan, M. Taupin, G. Eguchi, A. Prokofiev, T. Shiroka, P. Blaha, O. Rubel, S. E. Grefe, H.-H. Lai, Q. Si, and S. Paschen, PNAS 118, e2013386118 (2021).
[4] S. Dzsaber, D. A. Zocco, A. McCollam, F. Weickert, R. McDonald, M. Taupin, X. Yan, A. Prokofiev, L.M.K. Tang, B. Vlaar, L. E. Winter, M. Jaime, Q. Si, and S. Paschen, Nat. Commun. 13, 5729 (2022).
[5] S. E. Grefe, H.-H. Lai, S. Paschen, and Q. Si, arXiv:2012.15841.
[6] L. Chen, C. Setty, H. Hu, M. G. Vergniory, S. E. Grefe, L. Fischer, X. Yan, G. Eguchi, A. Prokofiev, S. Paschen, J. Cano, and Q. Si, Nat. Phys., Sept. 15 (2022), DOI:10.1038/s41567-022-01743-4.
[7] H. Hu, L. Chen, Ch. Setty, S. E. Grefe, A. Prokofiev, S. Kirchner, S. Paschen, J. Cano, and Q. Si, arXiv:2110.06182.
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Presenters
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Silke Buehler-Paschen
Institute of Solid State Physics, Vienna University of Technology, Vienna, Austria, TU Vienna, Vienna Univ of Technology, Institute of Solid State Physics, TU Wien, Vienna University of Technology, Institute of Solid State Physics, Technischen Universita¨t (TU) Wien, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria.
Authors
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Silke Buehler-Paschen
Institute of Solid State Physics, Vienna University of Technology, Vienna, Austria, TU Vienna, Vienna Univ of Technology, Institute of Solid State Physics, TU Wien, Vienna University of Technology, Institute of Solid State Physics, Technischen Universita¨t (TU) Wien, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria.