phase transitions induced by pressure and transport properties in ferromagnetic metal with non-collinear spins

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We have investigated the high pressure effect for the pyrochlore-type molybdates, which is the Mott transition system, to search for new spin-charge coupled phenomena in the geometrically frustrated lattices. It was found that a strongly correlated paramagnetic metal phase emerges under high pressures regardless of the ground state at ambient pressure. This anomalous metallic phase is considered as a result of the spin frustration due to the antiferromagnetic superexchange interaction enhanced by the external pressure.