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  Dynamical multiferroicity

Juraschek, D. M., Fechner, M., Balatsky, A. V., & Spaldin, N. A. (2017). Dynamical multiferroicity. Physical Review Materials, 1(1): 014401. doi:10.1103/PhysRevMaterials.1.014401.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-98AA-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-91AD-5
Genre: Journal Article

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PhysRevMaterials.1.014401.pdf (Publisher version), 957KB
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2017
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© American Physical Society

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https://arxiv.org/abs/1612.06331 (Preprint)
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 Creators:
Juraschek, D. M.1, Author
Fechner, M.1, 2, Author              
Balatsky, A. V.3, 4, 5, Author
Spaldin, N. A.1, Author
Affiliations:
1Materials Theory, ETH Zurich, ou_persistent22              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Institute for Materials Science, Los Alamos, ou_persistent22              
4NORDITA, ou_persistent22              
5Institute for Theoretical Studies, ETH Zurich, ou_persistent22              

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 Abstract: An appealing mechanism for inducing multiferroicity in materials is the generation of electric polarization by a spatially varying magnetization that is coupled to the lattice through the spin-orbit interaction. Here we describe the reciprocal effect, in which a time-dependent electric polarization induces magnetization even in materials with no existing spin structure. We develop a formalism for this dynamical multiferroic effect in the case for which the polarization derives from optical phonons, and compute the strength of the phonon Zeeman effect, which is the solid-state equivalent of the well-established vibrational Zeeman effect in molecules, using density functional theory. We further show that a recently observed behavior—the resonant excitation of a magnon by optically driven phonons—is described by the formalism. Finally, we discuss examples of scenarios that are not driven by lattice dynamics and interpret the excitation of Dzyaloshinskii-Moriya-type electromagnons and the inverse Faraday effect from the viewpoint of dynamical multiferroicity.

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Language(s): eng - English
 Dates: 2017-04-112017-06-19
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevMaterials.1.014401
arXiv: 1612.06331
 Degree: -

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Project name : We thank G. Aeppli, A. Cavalleri, M. Fiebig, T. F. Nova, and A. Scaramucci for useful discussions. This work was supported by the ETH Zürich, by Dr. Max Rössler and the Walter Haefner Foundation through the ETH Zürich Foundation, by US DOE E3B7, and by the ERC Advanced Grant program No. 291151 and No. DM-321031. Calculations were performed at the Swiss National Supercomputing Centre (CSCS) supported by the project IDs s624 and p504.
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Title: Physical Review Materials
  Abbreviation : Phys. Rev. Mat.
Source Genre: Journal
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Publ. Info: College Park, MD : American Physical Society
Pages: - Volume / Issue: 1 (1) Sequence Number: 014401 Start / End Page: - Identifier: ISSN: 2475-9953
CoNE: /journals/resource/2475-9953