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Title: Phonon-assisted formation of an itinerant electronic density wave

Abstract

Electronic instabilities drive ordering transitions in condensed matter. Despite many advances in the microscopic understanding of the ordered states, a more nuanced and profound question often remains unanswered: how do the collective excitations influence the electronic order formation? Here, we experimentally show that a phonon affects the spin density wave (SDW) formation after an SDW-quench by femtosecond laser pulses. In a thin film, the temperature-dependent SDW period is quantized, allowing us to track the out-of-equilibrium formation path of the SDW precisely. By exploiting its persistent coupling to the lattice, we probe the SDW through the transient lattice distortion, measured by femtosecond X-ray diffraction. We find that within 500 femtoseconds after a complete quench, the SDW forms with the low-temperature period, directly bypassing a thermal state with the high-temperature period. We argue that a wavevector-matched phonon launched by the quench changes the formation path of the SDW through the dynamic pinning of the order parameter.

Authors:
ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1869729
Alternate Identifier(s):
OSTI ID: 1877687; OSTI ID: 1880975
Grant/Contract Number:  
AC02-76SF00515; SC0019414; SC0001805; SC0003678
Resource Type:
Published Article
Journal Name:
Communications Physics
Additional Journal Information:
Journal Name: Communications Physics Journal Volume: 5 Journal Issue: 1; Journal ID: ISSN 2399-3650
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
42 ENGINEERING; Phase transitions and critical phenomena; Surfaces, interfaces and thin films

Citation Formats

Li, Jiaruo, Gorobtsov, Oleg Yu., Patel, Sheena K. K., Hua, Nelson, Gregory, Benjamin, Shabalin, Anatoly G., Hrkac, Stjepan, Wingert, James, Cela, Devin, Glownia, James M., Chollet, Matthieu, Zhu, Diling, Medapalli, Rajasekhar, Fullerton, Eric E., Shpyrko, Oleg G., and Singer, Andrej. Phonon-assisted formation of an itinerant electronic density wave. United Kingdom: N. p., 2022. Web. doi:10.1038/s42005-022-00902-6.
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Li, Jiaruo, Gorobtsov, Oleg Yu., Patel, Sheena K. K., Hua, Nelson, Gregory, Benjamin, Shabalin, Anatoly G., Hrkac, Stjepan, Wingert, James, Cela, Devin, Glownia, James M., Chollet, Matthieu, Zhu, Diling, Medapalli, Rajasekhar, Fullerton, Eric E., Shpyrko, Oleg G., & Singer, Andrej. Phonon-assisted formation of an itinerant electronic density wave. United Kingdom. https://doi.org/10.1038/s42005-022-00902-6
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Li, Jiaruo, Gorobtsov, Oleg Yu., Patel, Sheena K. K., Hua, Nelson, Gregory, Benjamin, Shabalin, Anatoly G., Hrkac, Stjepan, Wingert, James, Cela, Devin, Glownia, James M., Chollet, Matthieu, Zhu, Diling, Medapalli, Rajasekhar, Fullerton, Eric E., Shpyrko, Oleg G., and Singer, Andrej. Wed . "Phonon-assisted formation of an itinerant electronic density wave". United Kingdom. https://doi.org/10.1038/s42005-022-00902-6.
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@article{osti_1869729,
title = {Phonon-assisted formation of an itinerant electronic density wave},
author = {Li, Jiaruo and Gorobtsov, Oleg Yu. and Patel, Sheena K. K. and Hua, Nelson and Gregory, Benjamin and Shabalin, Anatoly G. and Hrkac, Stjepan and Wingert, James and Cela, Devin and Glownia, James M. and Chollet, Matthieu and Zhu, Diling and Medapalli, Rajasekhar and Fullerton, Eric E. and Shpyrko, Oleg G. and Singer, Andrej},
abstractNote = {Electronic instabilities drive ordering transitions in condensed matter. Despite many advances in the microscopic understanding of the ordered states, a more nuanced and profound question often remains unanswered: how do the collective excitations influence the electronic order formation? Here, we experimentally show that a phonon affects the spin density wave (SDW) formation after an SDW-quench by femtosecond laser pulses. In a thin film, the temperature-dependent SDW period is quantized, allowing us to track the out-of-equilibrium formation path of the SDW precisely. By exploiting its persistent coupling to the lattice, we probe the SDW through the transient lattice distortion, measured by femtosecond X-ray diffraction. We find that within 500 femtoseconds after a complete quench, the SDW forms with the low-temperature period, directly bypassing a thermal state with the high-temperature period. We argue that a wavevector-matched phonon launched by the quench changes the formation path of the SDW through the dynamic pinning of the order parameter.},
doi = {10.1038/s42005-022-00902-6},
journal = {Communications Physics},
number = 1,
volume = 5,
place = {United Kingdom},
year = {Wed May 25 00:00:00 EDT 2022},
month = {Wed May 25 00:00:00 EDT 2022}
}
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https://doi.org/10.1038/s42005-022-00902-6
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