Using ultrashort terahertz pulses to directly probe spin dynamics in insulating antiferromagnets
Abstract
Terahertz pulses are a direct and general probe of ultrafast spin dynamics in insulating antiferromagnets (AFM). This is shown by using optical-pump, THz-probe spectroscopy to directly track AFM spin dynamics in the hexagonal multiferroic HoMnO3 and the orthorhombic multiferroic TbMnO3. Here, our studies show that despite the different structural and spin orders in these materials, THz pulses can unambiguously resolve spin dynamics after optical photoexcitation. Lastly, we believe that this approach is quite general and can be applied to a broad range of materials with different AFM spin alignments, providing a novel non-contact approach for probing AFM order with femtosecond temporal resolution.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1481996
- Report Number(s):
- LA-UR-18-22625
Journal ID: ISSN 0022-3727
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. D, Applied Physics
- Additional Journal Information:
- Journal Volume: 51; Journal Issue: 19; Journal ID: ISSN 0022-3727
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Bowlan, Pamela Renee, Trugman, Stuart Alan, Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, and Prasankumar, Rohit Prativadi. Using ultrashort terahertz pulses to directly probe spin dynamics in insulating antiferromagnets. United States: N. p., 2018.
Web. doi:10.1088/1361-6463/aab8da.
Bowlan, Pamela Renee, Trugman, Stuart Alan, Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, & Prasankumar, Rohit Prativadi. Using ultrashort terahertz pulses to directly probe spin dynamics in insulating antiferromagnets. United States. https://doi.org/10.1088/1361-6463/aab8da
Bowlan, Pamela Renee, Trugman, Stuart Alan, Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, and Prasankumar, Rohit Prativadi. Thu .
"Using ultrashort terahertz pulses to directly probe spin dynamics in insulating antiferromagnets". United States. https://doi.org/10.1088/1361-6463/aab8da. https://www.osti.gov/servlets/purl/1481996.
@article{osti_1481996,
title = {Using ultrashort terahertz pulses to directly probe spin dynamics in insulating antiferromagnets},
author = {Bowlan, Pamela Renee and Trugman, Stuart Alan and Yarotski, Dmitry Anatolievitch and Taylor, Antoinette Jane and Prasankumar, Rohit Prativadi},
abstractNote = {Terahertz pulses are a direct and general probe of ultrafast spin dynamics in insulating antiferromagnets (AFM). This is shown by using optical-pump, THz-probe spectroscopy to directly track AFM spin dynamics in the hexagonal multiferroic HoMnO3 and the orthorhombic multiferroic TbMnO3. Here, our studies show that despite the different structural and spin orders in these materials, THz pulses can unambiguously resolve spin dynamics after optical photoexcitation. Lastly, we believe that this approach is quite general and can be applied to a broad range of materials with different AFM spin alignments, providing a novel non-contact approach for probing AFM order with femtosecond temporal resolution.},
doi = {10.1088/1361-6463/aab8da},
journal = {Journal of Physics. D, Applied Physics},
number = 19,
volume = 51,
place = {United States},
year = {Thu Mar 22 00:00:00 EDT 2018},
month = {Thu Mar 22 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
Lattice and spin dynamics in multiferroic BiFeO3 and RMnO3
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