Soft magnons in anisotropic ferromagnets

Bauer, G. E. W.; Tang, P.; Elyasi, M.; Blanter, Y. M.; van Wees, B. J.

doi:10.1103/physrevb.108.064431

Phys. Rev. B

2023

DOI: 10.1103/physrevb.108.064431

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Soft magnons in anisotropic ferromagnets

G. E. W. Bauer,

P. Tang,

M. Elyasi

et al.

Abstract: We discuss spin-wave transport in anisotropic ferromagnets with an emphasis on the zeros of the band edges as a function of a magnetic field. An associated divergence of the magnon spin should be observable by enhanced magnon conductivities in nonlocal configurations, especially in two-dimensional ferromagnets.

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Cited by 5 publications

References 25 publications

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Potential of Raman scattering in probing magnetic excitations and their coupling to lattice dynamics

Kumawat,

Farswan,

Kaur

et al. 2024

J. Phys.: Condens. Matter

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Raman scattering is an excellent method for simultaneously determining the dynamics of lattice, spin, and charge degrees of freedom. Furthermore, polarization selection rules in Raman scattering enable momentum-resolved quasiparticle dynamics. In this review, we highlight the potential of Raman scattering in probing magnetic quasiparticles or excitations in various magnetic materials. We demonstrate how temperature-dependent Raman scattering data can confirm the existence of magnons in long-range ordered magnets and fractionalized excitations in Kitaev spin liquid candidates. To make this review easily understandable to novices, we provide background information on magnons and fractionalized excitations, and explain how they become visible in the Raman scattering process. We also show how to estimate magnetic exchange interactions from the data. For both types of magnetic materials, we discuss the impact of spin–phonon coupling on the lineshape of the phonon modes. In terms of materials, we present magnetic Raman scattering data of antiferromagnetic Sr2IrO4 and La2CuO4, ferromagnetic CrI3 monolayers, and Kitaev spin liquid candidates α-RuCl3 and β-Li2IrO3. Overall, our review demonstrates the versatility of the Raman scattering technique in probing quasiparticles in magnetic quantum materials. The review aims to inform young experimental researchers about the potential of Raman scattering, thereby motivating them to use this technique in their research.

show abstract

Potential of Raman scattering in probing magnetic excitations and their coupling to lattice dynamics

Kumawat,

Farswan,

Kaur

et al. 2024

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

Polarization transport in ferroelectrics

Bauer,

Tang,

Iguchi

et al. 2023

Phys. Rev. Applied

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Cavity magnonics with easy-axis ferromagnets: Critically enhanced magnon squeezing and light-matter interaction

Lee,

Hwang

2023

Phys. Rev. B

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Soft magnons in anisotropic ferromagnets

Cited by 5 publications

References 25 publications

Potential of Raman scattering in probing magnetic excitations and their coupling to lattice dynamics

Potential of Raman scattering in probing magnetic excitations and their coupling to lattice dynamics

Polarization transport in ferroelectrics

Cavity magnonics with easy-axis ferromagnets: Critically enhanced magnon squeezing and light-matter interaction

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