# GdI2: a new ferromagnetic excitonic solid?

@article{Taraphder2008GdI2AN,
title={GdI2: a new ferromagnetic excitonic solid?},
author={A. Taraphder and Mukul S. Laad and Luis Craco and Alexander N. Yaresko},
journal={Physical review letters},
year={2008},
volume={101 13},
pages={
136410
}
}
The two-dimensional, colossal magnetoresistive system GdI2 develops an unusual metallic state below its ferromagnetic transition and becomes insulating at low temperatures. We argue that this geometrically frustrated, correlated poor metal is a possible candidate for a ferromagnetic excitonic liquid. The renormalized Fermi surface supports a further breaking of symmetry to a charge-ordered, excitonic solid ground state at lower temperatures via order by disorder mechanism. Several experimental…
15 Citations

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