Thermal stability of non-collinear antiferromagnetic Mn3Sn nanodot-Reference-Cited by-同舟云学术

Thermal stability of non-collinear antiferromagnetic Mn3Sn nanodot

Published:2023-03-20 Issue:12 Volume:122 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Sato Yuma¹²^ORCID,Takeuchi Yutaro³^ORCID,Yamane Yuta¹⁴^ORCID,Yoon Ju-Young¹²^ORCID,Kanai Shun¹²³⁵⁶⁷^ORCID,Ieda Jun’ichi⁸^ORCID,Ohno Hideo¹²³⁵⁹^ORCID,Fukami Shunsuke¹²³⁵⁹¹⁰^ORCID

Affiliation:

1. Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University 1 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

2. Graduate School of Engineering, Tohoku University 2 , 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan

3. WPI-Advanced Institute for Materials Research, Tohoku University 3 , 2-1-1 Katahira, Aoba-ku, Sendai 980–8577, Japan

4. Frontier Research Institute for Interdisciplinary Sciences, Tohoku University 4 , Sendai 980-8578, Japan

5. Center for Science and Innovation in Spintronics, Tohoku University 5 , 2-1-1 Katahira, Aoba-ku, Sendai 980–8577, Japan

6. PRESTO, Japan Science and Technology Agency (JST) 6 , Kawaguchi 332-0012, Japan

7. Division for the Establishment of Frontier Sciences of Organization for Advanced Studies at Tohoku University, Tohoku University 7 , Sendai 980-8577, Japan

8. Advanced Science Research Center, Japan Atomic Energy Agency 8 , Tokai, Ibaraki 319-1195, Japan

9. Center for Innovative Integrated Electronic Systems, Tohoku University 9 , 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan

10. Inamori Research Institute for Science 10 , Kyoto 600-8411, Japan

Abstract

D019-Mn3Sn, an antiferromagnet having a non-collinear spin structure in a kagome lattice, has attracted great attention owing to various intriguing properties such as large anomalous Hall effect. Stability of a magnetic state against thermal fluctuation, characterized in general by the thermal stability factor Δ, has been well studied in ferromagnetic systems but not for antiferromagnets. Here, we study Δ of the antiferromagnetic Mn3Sn nanodots as a function of their diameter D. To quantify Δ, we measure the switching probability as a function of the pulse-field amplitude and analyze the results based on a model taking account of two and sixfold magnetic anisotropies in the kagome plane. We observe no significant change in Δ down to D = 300 nm below which it decreases with D. The obtained D dependence is well explained by a single-domain and nucleation-mediated reversal models. These findings provide a basis to understand the thermal fluctuation and reversal mechanism of antiferromagnets for device applications.

Funder

Japan Society for the Promotion of Science

Initiative to Establish Next-generation Novel Integrated Circuits Centers

Casio Science Promotion Foundation

Research Institute of Electrical Communication, Tohoku University

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0135709/16785802/122404_1_online.pdf

Reference39 articles.