Geometrically frustrated magnets with strong spin-orbit coupling
| Thesis title in Czech: | Geometrically frustrated magnets with strong spin-orbit coupling |
|---|---|
| Thesis title in English: | Geometrically frustrated magnets with strong spin-orbit coupling |
| Key words: | Magnetism, Magnetic frustration, Quantum spin liquid |
| English key words: | Magnetism, Magnetic frustration, Quantum spin liquid |
| Academic year of topic announcement: | 2023/2024 |
| Thesis type: | diploma thesis |
| Thesis language: | |
| Department: | Department of Condensed Matter Physics (32-KFKL) |
| Supervisor: | Ross Harvey Colman, Dr. |
| Author: |
| Guidelines |
| 1. Prepare sample(s) using a range of polycrystalline and single crystal preparation methods
2. Characterize sample by magnetometry and X-ray diffraction 3. Write a report of the findings |
| References |
| [1] Balents, L. Nature (2010) 464, 199.
[2] Y. Li, P. Gegenwart, and A. A. Tsirlin. Spin liquids in geometrically perfect triangular antiferromagnets. Journal of Physics: Condensed Matter, IOP Publishing 2020, 32, 224004. https://iopscience.iop.org/article/10.1088/1361-648X/ab724e [3] Savary, L.; Balents, L. Quantum Spin Liquids: A Review. Reports Prog. Phys. 2017, 80 (1), 016502. https://doi.org/10.1088/0034-4885/80/1/016502 [4] Y. Li, G. Chen, W. Tong, L. Pi, J. Liu, Z. Yang, X. Wang, and Q. Zhang. Rare-Earth Triangular Lattice Spin Liquid: A Single-Crystal Study of YbMgGaO4. Phys. Rev. Lett. 2015, 115, 167203. https://link.aps.org/doi/10.1103/PhysRevLett.115.167203 [5] S. S. Stoyko and A. Mar. Ternary Rare-Earth Arsenides REZn3As3 (RE = La-Nd, Sm) and RECd3As3 (RE = La-Pr). Inorg. Chem. 2011, 50, 11152. https://doi.org/10.1021/ic201708x [6] J. Lee, A. Rabus, N. R. Lee-Hone, D. M. Broun, and E. Mun. The two-dimensional metallic triangular lattice antiferromagnet CeCd3P3 Phys. Rev. B 2019, 99, 245159. https://link.aps.org/doi/10.1103/PhysRevB.99.245159 [7] M. Ashtar, M. A. Marwat, Y. X. Gao, Z. T. Zhang, L. Pi, S. L. Yuan, and Z. M. Tian. REZnAl11O19 (RE = Pr, Nd, Sm–Tb): a new family of ideal 2D triangular lattice frustrated magnets. J. Mater. Chem. C 2019, 7, 10073. http://dx.doi.org/10.1039/C9TC02643F |
| Preliminary scope of work |
| Magnetism is a fascinating research area, because it is a nice playground to study many body physics and statistical mechanics and also thanks to the possible applications in electronics or energy management. Frustrated magnets are magnetic materials, where all the magnetic interactions cannot be simultaneously satisfied and thus compete with each other. In these materials a large variety of magnetically ordered states and disorder states such as the quantum spin liquid state can be found. The quantum spin liquid state is an intriguing state of matter with quantum entanglement between neighboring magnetic moments, but without any long-range magnetic order. The magnetic frustration was investigated in details in past decades in particular with 3d transition metals as magnetic ions. Recently this field was enlarged with the use of heavier magnetic ions, where the strong spin-orbit coupling can induce or reinforce magnetic frustration.
In the present thesis, the magnetic properties of few recently discovered rare earth based triangular lattice antiferromagnets will be investigated. The exact compound will be chosen at the beginning of the thesis, presumably among the families: REM3X3 (RE=rare earth, M=Zn, Cd X=P, As), REMAl11O19 (M=Mg, Zn). The work includes crystal growth, structural analysis and magnetization measurements. |
| Preliminary scope of work in English |
| Magnetism is a fascinating research area, because it is a nice playground to study many body physics and statistical mechanics and also thanks to the possible applications in electronics or energy management. Frustrated magnets are magnetic materials, where all the magnetic interactions cannot be simultaneously satisfied and thus compete with each other. In these materials a large variety of magnetically ordered states and disorder states such as the quantum spin liquid state can be found. The quantum spin liquid state is an intriguing state of matter with quantum entanglement between neighboring magnetic moments, but without any long-range magnetic order. The magnetic frustration was investigated in details in past decades in particular with 3d transition metals as magnetic ions. Recently this field was enlarged with the use of heavier magnetic ions, where the strong spin-orbit coupling can induce or reinforce magnetic frustration.
In the present thesis, the magnetic properties of few recently discovered rare earth based triangular lattice antiferromagnets will be investigated. The exact compound will be chosen at the beginning of the thesis, presumably among the families: REM3X3 (RE=rare earth, M=Zn, Cd X=P, As), REMAl11O19 (M=Mg, Zn). The work includes crystal growth, structural analysis and magnetization measurements. |