Long range orders

Schaab, J, M Trassin, A Scholl, A Doran, Z Yan, E Bourret, Ramamoorthy Ramesh, and D Meier. "Ferroelectric domains in the multiferroic phase of ErMnO3 imaged by low-temperature photoemission electron microscopy." Journal of Physics: Conference Series. Ed. Dalmas M. Vol. 592. Institute of Physics Publishing, 2014.