Jenni, K., Kunkemoeller, S., Bruening, D., Lorenz, T., Sidis, Y., Schneidewind, A., Nugroho, A. A., Rosch, A., Khomskii, D. I. and Braden, M. (2019). Interplay of Electronic and Spin Degrees in Ferromagnetic SrRuO3: Anomalous Softening of the Magnon Gap and Stiffness. Phys. Rev. Lett., 123 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The magnon dispersion of ferromagnetic SrRuO3 was studied by inelastic neutron scattering experiments on single crystals as a function of temperature. Even at low temperature the magnon modes exhibit substantial broadening pointing to strong interaction with charge carriers. We find an anomalous temperature dependence of both the magnon gap and the magnon stiffness, which soften upon cooling in the ferromagnetic phase. Both effects trace the temperature dependence of the anomalous Hall effect and can be attributed to the impact of Weyl points, which results in the same relative renormalization in the spin stiffness and magnon gap.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Jenni, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kunkemoeller, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruening, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lorenz, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sidis, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneidewind, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nugroho, A. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rosch, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khomskii, D. I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braden, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-135599
DOI: 10.1103/PhysRevLett.123.017202
Journal or Publication Title: Phys. Rev. Lett.
Volume: 123
Number: 1
Date: 2019
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
TRANSPORT-PROPERTIESMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/13559

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