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Title: 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 HoMnO 3 and the orthorhombic multiferroic TbMnO 3. 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:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (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. doi: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. doi: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 = {2018},
month = {3}
}

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Cited by: 3 works
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    Works referencing / citing this record:

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