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Title: Real-space observation of fluctuating antiferromagnetic domains

Abstract

Magnetic domains play a fundamental role in physics of magnetism and its technological applications. Dynamics of antiferromagnetic domains is poorly understood, although antiferromagnets are expected to be extensively used in future electronic devices wherein it determines the stability and operational speed. Dynamics of antiferromagnets also features prominently in the studies of topological quantum matter. Real-space imaging of fluctuating antiferromagnetic domains is therefore highly desired but has never been demonstrated. We use coherent x-ray diffraction to obtain videos of fluctuating micrometer-scale antiferromagnetic domains in Ni2MnTeO6 on time scales from 10-1 to 103 s. In the collinear phase, thermally activated domain wall motion is observed in the vicinity of the Néel temperature. Unexpectedly, the fluctuations persist through the full range of the higher-temperature helical phase. These observations illustrate the high potential significance of the dynamic domain imaging in phase transition studies and in magnetic device research.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2];  [2]; ORCiD logo [3]; ORCiD logo [3];  [4]; ORCiD logo [5];  [6]; ORCiD logo [2]; ORCiD logo [7]
+ Show Author Affiliations
  1. Rutgers Univ., Piscataway, NJ (United States); Univ. of Wisconsin, Milwaukee, WI (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. New Jersey Institute of Technology, Newark, NJ (United States)
  5. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
  6. Rutgers Univ., Piscataway, NJ (United States); Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
  7. Rutgers Univ., Piscataway, NJ (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; EMIR&A; National Research Foundation of Korea (NRF); Engineering and Physical Sciences Research Council; European Research Council (ERC)
OSTI Identifier:
1873171
Alternate Identifier(s):
OSTI ID: 1889127
Report Number(s):
BNL-223093-2022-JAAM; BNL-223463-2022-JAAM
Journal ID: ISSN 2375-2548; TRN: US2306981
Grant/Contract Number:  
SC0012704; FG02-07ER46382; SC0021188; 2016K1A4A4A01922028; 2020M3H4A2084417; EP/I022562/1; 227711
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 21; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Kim, Min Gyu, Barbour, Andi, Hu, Wen, Wilkins, Stuart B., Robinson, Ian K., Dean, Mark M., Yang, Junjie, Won, Choongjae, Cheong, Sang-Wook, Mazzoli, Claudio, and Kiryukhin, Valery. Real-space observation of fluctuating antiferromagnetic domains. United States: N. p., 2022. Web. doi:10.1126/sciadv.abj9493.
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Kim, Min Gyu, Barbour, Andi, Hu, Wen, Wilkins, Stuart B., Robinson, Ian K., Dean, Mark M., Yang, Junjie, Won, Choongjae, Cheong, Sang-Wook, Mazzoli, Claudio, & Kiryukhin, Valery. Real-space observation of fluctuating antiferromagnetic domains. United States. https://doi.org/10.1126/sciadv.abj9493
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Kim, Min Gyu, Barbour, Andi, Hu, Wen, Wilkins, Stuart B., Robinson, Ian K., Dean, Mark M., Yang, Junjie, Won, Choongjae, Cheong, Sang-Wook, Mazzoli, Claudio, and Kiryukhin, Valery. Fri . "Real-space observation of fluctuating antiferromagnetic domains". United States. https://doi.org/10.1126/sciadv.abj9493. https://www.osti.gov/servlets/purl/1873171.
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@article{osti_1873171,
title = {Real-space observation of fluctuating antiferromagnetic domains},
author = {Kim, Min Gyu and Barbour, Andi and Hu, Wen and Wilkins, Stuart B. and Robinson, Ian K. and Dean, Mark M. and Yang, Junjie and Won, Choongjae and Cheong, Sang-Wook and Mazzoli, Claudio and Kiryukhin, Valery},
abstractNote = {Magnetic domains play a fundamental role in physics of magnetism and its technological applications. Dynamics of antiferromagnetic domains is poorly understood, although antiferromagnets are expected to be extensively used in future electronic devices wherein it determines the stability and operational speed. Dynamics of antiferromagnets also features prominently in the studies of topological quantum matter. Real-space imaging of fluctuating antiferromagnetic domains is therefore highly desired but has never been demonstrated. We use coherent x-ray diffraction to obtain videos of fluctuating micrometer-scale antiferromagnetic domains in Ni2MnTeO6 on time scales from 10-1 to 103 s. In the collinear phase, thermally activated domain wall motion is observed in the vicinity of the Néel temperature. Unexpectedly, the fluctuations persist through the full range of the higher-temperature helical phase. These observations illustrate the high potential significance of the dynamic domain imaging in phase transition studies and in magnetic device research.},
doi = {10.1126/sciadv.abj9493},
journal = {Science Advances},
number = 21,
volume = 8,
place = {United States},
year = {Fri May 27 00:00:00 EDT 2022},
month = {Fri May 27 00:00:00 EDT 2022}
}
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Journal Article:
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https://doi.org/10.1126/sciadv.abj9493
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