Magnetization and Spin Dynamics in Two-Dimensional Magnets

Laith Alahmed1; Bhuwan Nepal2; Juan Macy3; Brian Casas3; Arjun Sapkota2; Alessandro R Mazza4; Matthew Brahlek5; Jiajia Wen6; Wencan Jin5; Steven S.-L. Zhang7; Claudia Mewes2; Li-Chuan Zhang8; Yuriy Mokrousov8; Wei Zhang9; Young S. Lee6; Luis Balicas3; Tim Mewes2; Xiaoqian Zhang10; Peng Li11

10.1109/INTERMAGShortPapers58606.2023.10228294

2023

979-8-3503-3837-9

2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers)

1-2

15-19 May 2023

Sendai, Japan

The discovery of magnetism in two-dimensional (2D) van der Waals (vdW) materials has flourished a new endeavor of fundamental problems in magnetism. In this talk, we will discuss the magnetization and spin dynamics in two types of 2D magnets: a room-temperature vdW magnetic crystal Fe5GeTe2 with a Curie temperature Tc = 332 K and Cu(1,3-bdc), a quasi-2D magnet with a Kagome lattice. Ferromagnetic resonance was performed with external magnetic fields applied along the c-axis (H║c) and the ab-plane (H║ab). We have found a sizable Landé g-factor difference between the H║c and H║ab cases for both Fe5GeTe2 and Cu(1,3-bdc). The FMR measurements have also revealed that Fe5GeTe2 has a damping constant comparable to Permalloy. Our experiments highlight key information regarding the magnetic state and spin scattering processes in 2D magnets, which can lead to implementations of 2D magnets based spintronic devices.

2D van der Waals magnet spin dynamics topological band quantum magnet

其他

EI

20234014825932

Germanium alloys ; Germanium compounds ; Iron alloys ; Magnetization ; Spin dynamics ; Van der Waals forces

Iron Alloys:545.2 ; Nickel Alloys:548.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3

IEEE

1.Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, USA
2.Department of Physics, University of Alabama, Tuscaloosa, AL, USA
3.National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
4.Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
5.Department of Physics, Auburn University, Auburn, AL, USA
6.Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
7.Department of Physics, Case Western Reserve University, Cleveland, OH, USA
8.Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, Germany
9.Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
10.Shenzhen Institute for Quantum Science and Engr., Southern University of Science and Technology, Shenzhen, China
11.School of Microelectronics, University of Science and Technology of China, Hefei, China

Laith Alahmed,Bhuwan Nepal,Juan Macy,et al. Magnetization and Spin Dynamics in Two-Dimensional Magnets[C],2023:1-2.