Determination of the Magnetic Symmetry of Hexagonal Manganites by Second Harmonic Generation

M. Fiebig; D. Fröhlich; K. Kohn; St. Leute; Th. Lottermoser; V. V. Pavlov; R. V. Pisarev

doi:10.1103/PhysRevLett.84.5620

Determination of the Magnetic Symmetry of Hexagonal Manganites by Second Harmonic Generation

M. Fiebig, D. Fröhlich, K. Kohn, St. Leute, Th. Lottermoser, V. V. Pavlov, and R. V. Pisarev

Phys. Rev. Lett. 84, 5620 – Published 12 June 2000

Abstract

Optical second harmonic spectroscopy is introduced as a powerful supplement for the determination of complex magnetic structures. Experimental efforts are simplified and new degrees of freedom are opened. Thereby, some principal or technical restrictions of neutron or magnetic x-ray diffraction experiments are overcome. High spatial resolution leads to additional information about magnetically ordered matter. As an example, the noncollinear magnetic structure of the hexagonal manganites $R {MnO}_{3}$ ( $R = Sc$ , Y, Ho, Er, Tm, Yb, Lu) is analyzed. The results show that some earlier conclusions on their magnetic symmetry and properties should be revised.

Received 16 February 2000

DOI:https://doi.org/10.1103/PhysRevLett.84.5620

Authors & Affiliations

M. Fiebig¹, D. Fröhlich¹, K. Kohn², St. Leute¹, Th. Lottermoser¹, V. V. Pavlov³, and R. V. Pisarev³

¹Institut für Physik, Universität Dortmund, 44221 Dortmund, Germany
²Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
³Ioffe Physical Technical Institute of the Russian Academy of Sciences, St. Petersburg 194021, Russia