The exceedingly strong two-dimensional ferromagnetism in bi-atomic layer SrRuO3 with a critical conduction transition
Abstract
In recent years, few-layer or even monolayer ferromagnetic materials have drawn a great deal of attention due to the promising integration of two-dimensional (2D) magnets into next-generation spintronic devices. The SrRuO3 monolayer is a rare example of stable 2D magnetism under ambient conditions, but only weak ferromagnetism or antiferromagnetism has been found. The bi-atomic layer SrRuO3 as another environmentally inert 2D magnetic system has been paid less attention heretofore. Here, in this paper, we study both the bi-atomic layer and monolayer SrRuO3 in (SrRuO3)n/(SrTiO3)m (n = 1, 2) superlattices in which the SrTiO3 serves as a non-magnetic and insulating space layer. Although the monolayer exhibits arguably weak ferromagnetism, we find that the bi-atomic layer exhibits exceedingly strong ferromagnetism with a Tc of 125 K and a saturation magnetization of 1.2 μB/Ru, demonstrated by both superconducting quantum interference device (SQUID) magnetometry and element-specific X-ray circular dichroism. Moreover, in the bi-atomic layer SrRuO3, we demonstrate that random fluctuations and orbital reconstructions inevitably occurring in the 2D limit are critical to the electrical transport, but are much less critical to the ferromagnetism. Our study demonstrates that the bi-atomic layer SrRuO3 is an exceedingly strong 2D ferromagnetic oxide which has great potentials for applicationsmore »
- Authors:
-
- Univ. of Science and Technology of China, Hefei (China)
- ShanghaiTech Univ. (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- National Natural Science Foundation of China (NSFC); Science and Technology Commission of Shanghai Municipality; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- OSTI Identifier:
- 1895039
- Alternate Identifier(s):
- OSTI ID: 1962018
- Grant/Contract Number:
- AC02-06CH11357; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Research
- Additional Journal Information:
- Journal Volume: 15; Journal Issue: 8; Journal ID: ISSN 1998-0124
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; two-dimensional (2D) ferromagnetism; correlated oxides; SrRuO3; non-Fermi liquid; weak localization
Citation Formats
Zhang, Jingxian, Cheng, Long, Cao, Hui, Bao, Mingrui, Zhao, Jiyin, Liu, Xuguang, Zhao, Aidi, Choi, Yongseong, Zhou, Hua, Shafer, Padraic, and Zhai, Xiaofang. The exceedingly strong two-dimensional ferromagnetism in bi-atomic layer SrRuO3 with a critical conduction transition. United States: N. p., 2022.
Web. doi:10.1007/s12274-022-4392-5.
Zhang, Jingxian, Cheng, Long, Cao, Hui, Bao, Mingrui, Zhao, Jiyin, Liu, Xuguang, Zhao, Aidi, Choi, Yongseong, Zhou, Hua, Shafer, Padraic, & Zhai, Xiaofang. The exceedingly strong two-dimensional ferromagnetism in bi-atomic layer SrRuO3 with a critical conduction transition. United States. https://doi.org/10.1007/s12274-022-4392-5
Zhang, Jingxian, Cheng, Long, Cao, Hui, Bao, Mingrui, Zhao, Jiyin, Liu, Xuguang, Zhao, Aidi, Choi, Yongseong, Zhou, Hua, Shafer, Padraic, and Zhai, Xiaofang. Wed .
"The exceedingly strong two-dimensional ferromagnetism in bi-atomic layer SrRuO3 with a critical conduction transition". United States. https://doi.org/10.1007/s12274-022-4392-5. https://www.osti.gov/servlets/purl/1895039.
@article{osti_1895039,
title = {The exceedingly strong two-dimensional ferromagnetism in bi-atomic layer SrRuO3 with a critical conduction transition},
author = {Zhang, Jingxian and Cheng, Long and Cao, Hui and Bao, Mingrui and Zhao, Jiyin and Liu, Xuguang and Zhao, Aidi and Choi, Yongseong and Zhou, Hua and Shafer, Padraic and Zhai, Xiaofang},
abstractNote = {In recent years, few-layer or even monolayer ferromagnetic materials have drawn a great deal of attention due to the promising integration of two-dimensional (2D) magnets into next-generation spintronic devices. The SrRuO3 monolayer is a rare example of stable 2D magnetism under ambient conditions, but only weak ferromagnetism or antiferromagnetism has been found. The bi-atomic layer SrRuO3 as another environmentally inert 2D magnetic system has been paid less attention heretofore. Here, in this paper, we study both the bi-atomic layer and monolayer SrRuO3 in (SrRuO3)n/(SrTiO3)m (n = 1, 2) superlattices in which the SrTiO3 serves as a non-magnetic and insulating space layer. Although the monolayer exhibits arguably weak ferromagnetism, we find that the bi-atomic layer exhibits exceedingly strong ferromagnetism with a Tc of 125 K and a saturation magnetization of 1.2 μB/Ru, demonstrated by both superconducting quantum interference device (SQUID) magnetometry and element-specific X-ray circular dichroism. Moreover, in the bi-atomic layer SrRuO3, we demonstrate that random fluctuations and orbital reconstructions inevitably occurring in the 2D limit are critical to the electrical transport, but are much less critical to the ferromagnetism. Our study demonstrates that the bi-atomic layer SrRuO3 is an exceedingly strong 2D ferromagnetic oxide which has great potentials for applications of ultracompact spintronic devices.},
doi = {10.1007/s12274-022-4392-5},
journal = {Nano Research},
number = 8,
volume = 15,
place = {United States},
year = {Wed Jun 08 00:00:00 EDT 2022},
month = {Wed Jun 08 00:00:00 EDT 2022}
}
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