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Dynamically induced...
Dynamically induced magnetism in KTaO3
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- Geilhufe, Matthias (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.,Nordiska institutet för teoretisk fysik (Nordita)
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- Juricic, Vladimir (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.;Univ Tecn Federico Santa Maria, Dept Fis, Casilla 110, Valparaiso, Chile.,Nordiska institutet för teoretisk fysik (Nordita),Universidad Técnica Federico Santa María, Chile
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- Bonetti, Stefano (author)
- Stockholms universitet,Fysikum,Ca’ Foscari University of Venice, Italy
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- Zhu, Jian-Xin (author)
- Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA.;Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
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- Balatsky, Alexander V. (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.;Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.;Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA.,Nordiska institutet för teoretisk fysik (Nordita),University of Connecticut, USA
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(creator_code:org_t)
- American Physical Society (APS), 2021
- 2021
- English.
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In: Physical Review Research. - : American Physical Society (APS). - 2643-1564. ; 3:2
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Dynamical multiferroicity features entangled dynamic orders: fluctuating electric dipoles induce magnetization. Hence, the material with paraelectric fluctuations can develop magnetic signatures if dynamically driven. We identify the paraelectric KTaO3 (KTO) as a prime candidate for the observation of the dynamical multiferroicity. We show that when a KTO sample is exposed to a circularly polarized laser pulse, the dynamically induced ionic magnetic moments are of the order of 5% of the nuclear magneton per unit cell. We determine the phonon spectrum using ab initio methods, and we identify T-1u as relevant phonon modes that couple to the external field and induce magnetic polarization. We also predict a corresponding electron effect for the dynamically induced magnetic moment, which is enhanced by several orders of magnitude due to the significant mass difference between electron and ionic nucleus.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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