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Updated: Jun 5, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Engineering skyrmion from spin spiral in transition metal multilayers
Banasree Sadhukhan1,2,3
1Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203 Chennai, Tamil Nadu, India.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|December 11, 2024
Summary
This study explores skyrmion generation in 4d/Fe/Ir(111) magnetic multilayers. Rh/Fe/Ir(111) shows stable skyrmion phases up to 90 K, offering potential for spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Skyrmions are topologically protected, particle-like magnetic field configurations crucial in diverse scientific fields.
- Understanding skyrmion formation and stability in magnetic multilayers is key for developing advanced electronic devices.
- The 4d/Fe/Ir(111) system presents a platform to investigate the influence of transition metals on magnetic interactions.
Purpose of the Study:
- To investigate the generation of skyrmions from spin spirals in 4d/Fe/Ir(111) magnetic multilayers.
- To analyze the impact of different 4d transition metals (Y, Zr, Nb, Mo, Ru, Rh) on magnetic interactions.
- To determine the conditions for skyrmion phase stability under external magnetic fields and temperature.
Main Methods:
- Theoretical investigation of isotropic Heisenberg exchange and Dzyaloshinskii-Moriya interactions.
- Analysis of orbital decomposition for exchange interactions in Fe-3d orbitals.
- Spin dynamics and Monte Carlo simulations to study magnetic ground states and phase transitions.
Main Results:
- A strong exchange frustration arises from Fe-3d, 4d, and Ir-5d hybridization, modulated by 4d band filling.
- The magnetic ground state is a spin spiral in the ab-plane (1-2.5 nm period), with Y/Fe/Ir(111) exhibiting larger wavelengths than Rh/Fe/Ir(111).
- An external magnetic field of ~12 T deforms the spin spiral into isolated skyrmions, transitioning to a skyrmion lattice around ~18 T in Rh/Fe/Ir(111).
Conclusions:
- The study elucidates the role of 4d transition metals in mediating magnetic interactions and spin spiral formation.
- Rh/Fe/Ir(111) demonstrates the potential for skyrmion generation and manipulation via external magnetic fields.
- The magnetic skyrmion phase in Rh/Fe/Ir(111) is stable against thermal fluctuations up to 90 K.
Keywords:
Dzyaloshinskii–Moriya interactionmagnetismquantum materialsskyrmiontransition metal multilayersMore Related Videos
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