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Luo J, Zhang Q, Lin J, Ni Y, Wang H, Tang Y, Lan M. TaF 4: A Novel Two-Dimensional Antiferromagnetic Material with a High Néel Temperature Investigated Using First-Principles Calculations. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2780. [PMID: 38894043 PMCID: PMC11173987 DOI: 10.3390/ma17112780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 05/28/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024]
Abstract
The structural, electronic, and magnetic properties of a novel two-dimensional monolayer material, TaF4, are investigated using first-principles calculations. The dynamical and thermal stabilities of two-dimensional monolayer TaF4 were confirmed using its phonon dispersion spectrum and molecular dynamics calculations. The band structure obtained via the high-accuracy HSE06 (Heyd-Scuseria-Ernzerhof 2006) functional theory revealed that monolayer two-dimensional TaF4 is an indirect bandgap semiconductor with a bandgap width of 2.58 eV. By extracting the exchange interaction intensities and magnetocrystalline anisotropy energy in a J1-J2-J3-K Heisenberg model, it was found that two-dimensional monolayer TaF4 possesses a Néel-type antiferromagnetic ground state and has a relatively high Néel temperature (208 K) and strong magnetocrystalline anisotropy energy (2.06 meV). These results are verified via the magnon spectrum.
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Affiliation(s)
- Jia Luo
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Qingkai Zhang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Jindong Lin
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Yuxiang Ni
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Hongyan Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Yongliang Tang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610032, China
| | - Mu Lan
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu 610103, China
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Pang K, Xu X, Wei Y, Ying T, Gao B, Li W, Jiang Y. Strain-dependent magnetic ordering switching in 2D AFM ternary V-based chalcogenide monolayers. NANOSCALE 2023; 15:13420-13427. [PMID: 37547928 DOI: 10.1039/d3nr02188b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The lack of macroscopic magnetic moments makes antiferromagnetic materials promising candidates for high-speed spintronic devices. The 2D ternary V-based chalcogenides (VXYSe4; X, Y = Al, Ga) monolayers are investigated based on the density-functional theory and Monte Carlo simulations. The results reveal that the Néel temperature of the VGa2Se4 monolayer is 18 K with zigzag2-antiferromagnetic (AFM) spin ordering. Also, the magnetic ordering of V ions in VAl2Se4 and VAlGaSe4 monolayers prefer zigzag1-AFM coupling with Néel temperature of 47 K and 33 K, respectively. The magnetic anisotropy calculations demonstrate that the easy magnetization axis of the VXYSe4 monolayers is parallel to the y axis. In addition, the VXYSe4 monolayers can be adjusted from the AFM state to the ferromagnetic (FM) state under biaxial stretching, which can be attributed to the competition between d-p-d superexchange and d-d direct exchange caused by the variation of bond length. The transition temperature of VXYSe4 monolayers can be elevated above room temperature with the help of compression strain. In particular, the in-plane magnetic anisotropy is a robust characteristic regardless of the magnitude of the applied biaxial strain. These explorations not only enrich the family of AFM monolayers with excellent stability but also provide distinctive ideas for the performance control of AFM materials and their applications in nanodevices.
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Affiliation(s)
- Kaijuan Pang
- School of Physics, Harbin Institute of Technology, Harbin 150001, China.
| | - Xiaodong Xu
- School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Yadong Wei
- School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Tao Ying
- School of Physics, Harbin Institute of Technology, Harbin 150001, China.
| | - Bo Gao
- School of Physics, Harbin Institute of Technology, Harbin 150001, China.
| | - Weiqi Li
- School of Physics, Harbin Institute of Technology, Harbin 150001, China.
| | - Yongyuan Jiang
- School of Physics, Harbin Institute of Technology, Harbin 150001, China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province, Harbin 150001, China
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Zhou Z, Zheng Z, He J, Wang J, Prezhdo OV, Frauenheim T. Ultrafast Laser Control of Antiferromagnetic-Ferrimagnetic Switching in Two-Dimensional Ferromagnetic Semiconductor Heterostructures. NANO LETTERS 2023. [PMID: 37307217 DOI: 10.1021/acs.nanolett.3c01350] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Realizing ultrafast control of magnetization switching is of crucial importance for information processing and recording technology. Here, we explore the laser-induced spin electron excitation and relaxation dynamics processes of CrCl3/CrBr3 heterostructures with antiparallel (AP) and parallel (P) systems. Although an ultrafast demagnetization of CrCl3 and CrBr3 layers occurs in both AP and P systems, the overall magnetic order of the heterostructure remains unchanged due to the laser-induced equivalent interlayer spin electron excitation. More crucially, the interlayer magnetic order switches from antiferromagnetic (AFM) to ferrimagnetic (FiM) in the AP system once the laser pulse disappears. The microscopic mechanism underpinning this magnetization switching is dominated by the asymmetrical interlayer charge transfer combined with a spin-flip, which breaks the interlayer AFM symmetry and ultimately results in an inequivalent shift in the moment between two FM layers. Our study opens up a new idea for ultrafast laser control of magnetization switching in two-dimensional opto-spintronic devices.
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Affiliation(s)
- Zhaobo Zhou
- Bremen Center for Computational Materials Science, University of Bremen, Bremen 28359, Germany
| | - Zhenfa Zheng
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Junjie He
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague 12843, Czech Republic
| | - Jinlan Wang
- School of Physics, Southeast University, Nanjing 211189, China
| | - Oleg V Prezhdo
- Departments of Chemistry, and Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States
| | - Thomas Frauenheim
- School of Science, Constructor University, Bremen 28759, Germany
- Beijing Computational Science Research Center, Beijing 100193, China
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518109, China
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Usachov DY, Glazkova D, Tarasov AV, Schulz S, Poelchen G, Bokai KA, Vilkov OY, Dudin P, Kummer K, Kliemt K, Krellner C, Vyalikh DV. Estimating the Orientation of 4f Magnetic Moments by Classical Photoemission. J Phys Chem Lett 2022; 13:7861-7869. [PMID: 35977384 DOI: 10.1021/acs.jpclett.2c02203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
To use efficiently the magnetic functionalities emerging at the surfaces or interfaces of novel lanthanides-based materials, there is a need for complementary methods to probe the atomic-layer resolved magnetic properties. Here, we show that 4f photoelectron spectroscopy is highly sensitive to the collective orientation of 4f magnetic moments and, thus, a powerful tool for characterizing the related properties. To demonstrate this, we present the results of systematic study of a family of layered crystalline 4f-materials, which are crystallized in the body-centered tetragonal ThCr2Si2 structure. Analysis of 4f spectra indicates that the 4f moments at the surface experience a strong reorientation with respect to the bulk, caused by changes of the crystal-electric field. The presented database of the computed 4f spectra for all trivalent rare-earth ions in their different MJ states will facilitate the estimation of the orientation of the 4f magnetic moments in the layered 4f-systems for efficient control of their magnetic properties.
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Affiliation(s)
- Dmitry Yu Usachov
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg 199034, Russia
| | - Daria Glazkova
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg 199034, Russia
| | - Artem V Tarasov
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg 199034, Russia
| | - Susanne Schulz
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062 Dresden, Germany
| | - Georg Poelchen
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062 Dresden, Germany
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
| | - Kirill A Bokai
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg 199034, Russia
| | - Oleg Yu Vilkov
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg 199034, Russia
| | - Pavel Dudin
- Synchrotron-SOLEIL, Saint-Aubin, BP48, 91192 Gif-sur-Yvette, France
| | - Kurt Kummer
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
| | - Kristin Kliemt
- Kristall-und Materiallabor, Physikalisches Institut, Goethe-Universität Frankfurt, Max-von-Laue Strasse 1, D-60438 Frankfurt am Main, Germany
| | - Cornelius Krellner
- Kristall-und Materiallabor, Physikalisches Institut, Goethe-Universität Frankfurt, Max-von-Laue Strasse 1, D-60438 Frankfurt am Main, Germany
| | - Denis V Vyalikh
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Basque Country, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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