Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12

Details Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12 Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12

2000-11-10

arxiv.org/abs/cond-mat/0011179v1

J. Phys.: Condens. Matter 13 (2001) L45

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 2 figures; J. Phys.: Condens. Matter (in press)

Scientific paper

10.1088/0953-8984/13/2/102

A structural phase transition has been found using electron diffraction technique in PrRu4P12 accompanied by a metal - insulator (M - I) transition (TMI = 60K). Weak superlattice spots appeared at (H, K, L) (H + K + L = 2n + 1; n is an integer) position at a temperature of T = 12 K and 40 K. Above T = 70 K, the spots completely vanished. The space group of the low temperature phase is probably Pm3. This is the first observation of a symmetry other than Im3 in skutterudite compounds.

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