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Advanced Spintronic Materials and Devices

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (20 May 2024) | Viewed by 1794

Special Issue Editors


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Guest Editor
School of Physics, Southeast University, Nanjing 211189, China
Interests: spintronics; magnetic films; spin wave; magnon; spin-orbit coupling
School of Physics, Southeast University, Nanjing 211189, China
Interests: spin-orbit torque; spin pumping; 2D materials; magnetic heterostructures

Special Issue Information

Dear Colleagues,

Spintronics is an emerging form of electronics that uses electron spin to carry information. In contrast to conventional semiconductor devices, spintronic devices take the advantages of high speed, low consumption, and versatility. Recent years have witnessed a sharp rise in the number of research on this topic. New branches in this field including magnonics and orbitronics have emerged, and novel spintronic phenomena such as spin-orbit torque, spin-pumping effect, spin filtering effect, spin diode effect, and spin Seebeck effect have been proposed and verified. In that context, spintronic materials with abundant properties and spintronic devices with high performance and low-power consumption are demanded.

The main goal of the Special Issue is to highlight Original Research, Reviews, Mini Reviews and Perspective Articles on themes including, but not limited to:

  • Spin dynamics;
  • Spin transport;
  • Spin-orbit coupling;
  • Spin-orbit torque;
  • Spin wave/magnon;
  • Magnetic heterostructures;
  • 2D magnetism.

Prof. Dr. Ya Zhai
Dr. Qian Chen
Guest Editors

Manuscript Submission Information

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Keywords

  • spintronics
  • spin dynamics
  • spin transport
  • spin pumping
  • magnon
  • spin wave
  • spin-orbit coupling
  • magnetic films
  • magnetic heterostructures and multilayers
  • 2D magnetic materials and devices.

Published Papers (2 papers)

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Research

10 pages, 1919 KiB  
Article
Modulation of Standing Spin Waves in Confined Rectangular Elements
by Milad Jalali, Qian Chen, Xuejian Tang, Qingjie Guo, Jian Liang, Xiaochao Zhou, Dong Zhang, Zhaocong Huang and Ya Zhai
Materials 2024, 17(10), 2404; https://doi.org/10.3390/ma17102404 - 16 May 2024
Viewed by 352
Abstract
Magnonics is an emerging field within spintronics that focuses on developing novel magnetic devices capable of manipulating information through the modification of spin waves in nanostructures with submicron size. Here, we provide a confined magnetic rectangular element to modulate the standing spin waves, [...] Read more.
Magnonics is an emerging field within spintronics that focuses on developing novel magnetic devices capable of manipulating information through the modification of spin waves in nanostructures with submicron size. Here, we provide a confined magnetic rectangular element to modulate the standing spin waves, by changing the saturation magnetisation (MS), exchange constant (A), and the aspect ratio of rectangular magnetic elements via micromagnetic simulation. It is found that the bulk mode and the edge mode of the magnetic element form a hybrid with each other. With the decrease in MS, both the Kittel mode and the standing spin waves undergo a shift towards higher frequencies. On the contrary, as A decreases, the frequencies of standing spin waves become smaller, while the Kittel mode is almost unaffected. Moreover, when the length-to-width aspect ratio of the element is increased, standing spin waves along the width and length become split, leading to the observation of additional modes in the magnetic spectra. For each mode, the vibration style is discussed. These spin dynamic modes were further confirmed via FMR experiments, which agree well with the simulation results. Full article
(This article belongs to the Special Issue Advanced Spintronic Materials and Devices)
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17 pages, 2755 KiB  
Article
Surface-Induced Electronic and Vibrational Level Shifting of [Fe(py)2bpym(NCS)2] on Al(100)
by Yachao Zhang
Materials 2023, 16(18), 6150; https://doi.org/10.3390/ma16186150 - 10 Sep 2023
Cited by 1 | Viewed by 897
Abstract
It is essential that one understands how the surface degrees of freedom influence molecular spin switching to successfully integrate spin crossover (SCO) molecules into devices. This study uses density functional theory calculations to investigate how spin state energetics and molecular vibrations change in [...] Read more.
It is essential that one understands how the surface degrees of freedom influence molecular spin switching to successfully integrate spin crossover (SCO) molecules into devices. This study uses density functional theory calculations to investigate how spin state energetics and molecular vibrations change in a Fe(II) SCO compound named [Fe(py)2bpym(NCS)2] when deposited on an Al(100) surface. The calculations consider an environment-dependent U to assess the local Coulomb correlation of 3d electrons. The results show that the adsorption configurations heavily affect the spin state splitting, which increases by 10–40 kJmol1 on the surface, and this is detrimental to spin conversion. This effect is due to the surface binding energy variation across the spin transition. The preference for the low-spin state originates partly from the strong correlation effect. Furthermore, the surface environment constrains the vibrational entropy difference, which decreases by 8–17 Jmol1K1 (at 300 K) and leads to higher critical temperatures. These results suggest that the electronic energy splitting and vibrational level shifting are suitable features for characterizing the spin transition process on surfaces, and they can provide access to high-throughput screening of spin crossover devices. Full article
(This article belongs to the Special Issue Advanced Spintronic Materials and Devices)
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