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Nonlinear magneto-optical properties of colossal magnetoresistive manganites
M Fiebig1, K Miyano, Y Tomioka
1Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan. fiebig@janeway.physik.uni-dortmund.de
Physical Review Letters
|June 21, 2001
Abstract:
Pr(1--x)CaxMnO(3) and Nd(1--x)SrxMnO(3) were investigated with three-photon difference frequency generation (DFG). This method allows one to determine both the crystalline and the magnetic symmetry. In the highly ordered low-temperature phase of Nd(0.50)Sr(0.50)MnO(3), a DFG contribution coupling simultaneously to antiferromagnetic and charge ordering was observed and used to reveal the formation of domains. Thus, magnetically induced three-photon processes are introduced into the fields of both nonlinear magneto-optics and colossal magnetoresistance as a powerful new method.