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Light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability

Ning, Honglie and Mehio, Omar and Lian, Chao and Li, Xinwei and Zoghlin, Eli and Zhou, Preston and Cheng, Bryan and Wilson, Stephen D. and Wong, Bryan M. and Hsieh, David (2022) Light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability. Physical Review B, 106 (20). Art. No. 205118. ISSN 2469-9950. doi:10.1103/physrevb.106.205118.

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Elemental tellurium is a strongly spin-orbit coupled Peierls-distorted semiconductor whose band structure features topologically protected Weyl nodes. Using time-dependent density functional theory calculations, we show that impulsive optical excitation can be used to transiently control the amplitude of the Peierls distortion, realizing a mechanism to switch tellurium between three states: Weyl semiconductor, Weyl metal, and non-Weyl metal. Further, we present experimental evidence of this inverse Peierls distortion using time-resolved optical second harmonic generation measurements. These results provide a pathway to multifunctional ultrafast Weyl devices and introduce Peierls systems as viable hosts of light-induced topological transitions.

Item Type:Article
Related URLs:
URLURL TypeDescription
Ning, Honglie0000-0003-4867-0751
Li, Xinwei0000-0003-0555-2624
Zoghlin, Eli0000-0002-8160-584X
Cheng, Bryan0000-0003-1787-0240
Wilson, Stephen D.0000-0003-3733-930X
Wong, Bryan M.0000-0002-3477-8043
Hsieh, David0000-0002-0812-955X
Additional Information:We thank M. Buchhold, A. de la Torre, N. J. Laurita, and A. Ron for helpful discussions. We are grateful to G. Rossman for assistance with and use of the Raman spectrometer. Optical spectroscopy measurements were supported by the U.S. Department of Energy under Grant No. DE SC0010533. D.H. also acknowledges funding from the David and Lucile Packard Foundation and support for instrumentation from the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (Grant No. PHY-1733907). RT-TDDFT calculations by C.L. and B.M.W. were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, TCMP Program, under Award No. DE-SC0022209. S.D.W. and E.Z. gratefully acknowledge support via the University of California, Santa Barbara, NSF Quantum Foundry funded via the Q-AMASE-i program under Award No. DMR-1906325.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0010533
David and Lucile Packard FoundationUNSPECIFIED
Department of Energy (DOE)DE-SC0022209
Issue or Number:20
Record Number:CaltechAUTHORS:20221202-906480600.4
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118208
Deposited By: Research Services Depository
Deposited On:05 Jan 2023 16:59
Last Modified:05 Jan 2023 16:59

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