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Phys. Rev. Lett. 93, 037204 (2004) [4 pages]

Magnetic-Field Induced Second Harmonic Generation in CuB2O4

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R. V. Pisarev1, I. Sänger2, G. A. Petrakovskii3, and M. Fiebig4,*
1Ioffe Physical Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia
2Institut für Physik, Universität Dortmund, 44221 Dortmund, Germany
3Siberian Branch of the Russian Academy of Sciences, Institute of Physics, 660036 Krasnoyarsk, Russia
4Max-Born-Institut, Max-Born-Straße 2A, 12489 Berlin, Germany

Received 26 January 2004; published 15 July 2004

Three types of optical magnetic-field induced second harmonic (MFISH) generation are observed in CuB2O4. Unusually sharp and intense electronic transitions in MFISH and linear absorption spectra provide selective access to the two nonequivalent Cu2+ sublattices. The magnetic phase diagram for both sublattices is determined by MFISH. Magnetic structure is dominated by antiferromagnetic order at the 4b site. Sublattice interactions transfer it to the 8d site where it coexists with a discoupled paramagnetic component.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.037204
DOI:
10.1103/PhysRevLett.93.037204
PACS:
75.25.+z, 42.65.Ky, 71.70.Ch, 75.30.Kz

*Electronic address: fiebig@mbi-berlin.de

 
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