Time-resolved imaging of magnetoelectric domain switching in multiferroic MnWO4

Details Time-resolved imaging of magnetoelectric domain switching in multiferroic MnWO4 Time-resolved imaging of magnetoelectric domain switching in multiferroic MnWO4

2011-03-10

arxiv.org/abs/1103.2066v3

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.84.184404

By an electrical-pump--optical-probe technique we show that the electric-field-induced reversal of the magnetic order parameter in multiferroic MnWO$_4$ occurs on the time scale of milliseconds and maintains a rigid coupling of the magnetization to the magnetically induced electric polarization. The temporal progression of the spatially resolved domain structure was imaged with nanosecond resolution by optical second harmonic generation and compared to the quasi-static domain reversal. A qualitative model gives an estimate of why the magnetoelectric order-parameter reversal in the magnetically induced ferroelectrics is not inherently ultrafast.

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