Evidence for Magnetic Ordering Associated with Metal-Insulator Transition in SmRu4P12 Studied by Muon Spin Relaxation

Abstract

Muon spin relaxation measurements on the filled skutterudite compound SmRu4P12 have been carried out in zero- and longitudinal-fields. Temperature dependence of both initial asymmetry and muon-spin depolarization rate show the appearance of a magnetically ordered state below the metal-insulator transition temperature TMI. The present study indicates that the ordering below TMI is not a non-magnetic antiferro-quadrupolar ordering but a magnetic one, which supports a scenario that a magnetic octupolar ordering occurs below TMI in SmRu4P12.

arXiv comment5 pages, 5 figures, Phys. Rev. B 73, 052408 (2006)

References in corpus (3)

• Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12
• Octupolar ordering of Gamma8 ions in magnetic field
• Theory of Metal-Insulator Transition in PrRu4P12 and PrFe4P12

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