EXAFS study of LiV_(2)O_(4) under high pressure

摘要

The EXAFS analysis of LiV_(2)O_(4), under pressure, is discussed. Subtle changes observable above 13 GPa suggest that a charge-ordering state is induced at high pressure. This state is probably similar to the one recently discussed by Katsufuji and coworkers [T. Katsufuji et al., Phys. Rev. Lett. 96 086046 (2006).] for a similar compound, which proposed the formation of "vanadium molecules" in a geometrically frustrated crystal.