GIST Scholar
College of Artificial Intelligence
Department of Electrical Engineering and Computer Science
1. Journal Articles
Observation of spin-glass-like characteristics in ferrimagnetic TbCo through energy-level-selective approach
- Type
- Article
- Citation
- Nature Communications, v.13, no.1
- Issued Date
- 2022-09
- Abstract
- Rare earth (RE)-transition metal (TM) ferrimagnetic alloys are gaining increasing attention because of their potential use in the field of antiferromagnetic spintronics. The moment from RE sub-lattice primarily originates from the 4f-electrons located far below the Fermi level (E-F), and the moment from TM sub-lattice arises from the 3d-electrons across the E-F. Therefore, the individual magnetic moment configurations at different energy levels must be explored to clarify the microscopic mechanism of antiferromagnetic spin dynamics. Considering these issues, here we investigate the energy-level-selective magnetic moment configuration in ferrimagnetic TbCo alloy. We reveal that magnetic moments at deeper energy levels are more easily altered by the external magnetic field than those near the E-F. More importantly, we find that the magnetic moments at deeper energy levels exhibit a spin-glass-like characteristics such as slow dynamics and magnetic moment freezing whereas those at E-F do not. These unique energy-level-dependent characteristics of RE-TM ferrimagnet may provide a better understanding of ferrimagnet, which could be useful in spintronic applications as well as in spin-glass studies.
- Publisher
- Nature Publishing Group
- ISSN
- 2041-1723
- Appears in Collections:
- Department of Electrical Engineering and Computer Science > 1. Journal Articles
- Files in This Item:
-
-
There are no files associated with this item.
-
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.