Charge-density-wave ordering in the metal-insulator transition compound PrRu{sub 4}P{sub 12}

Journal Article · Fri Oct 15 00:00:00 EDT 2004 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.70.153105· OSTI ID:20664920

Lee, C H; Matsuhata, H; Yamaguchi, H; Sekine, C; Kihou, K; Suzuki, T; Noro, T; Shirotani, I ^[1]

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1. National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)

X-ray and electron diffraction measurements on the metal-insulator (M-I) transition compound PrRu{sub 4}P{sub 12} have revealed a periodic ordering of charge density around the Pr atoms. It is found that the ordering is associated with the onset of a low temperature insulator phase. These conclusions are supported by the facts that the space group of the crystal structure transforms from Im3 to Pm3 below the M-I transition temperature and also that the temperature dependence of the superlattice peaks in the insulator phase follows the squared BCS function. The M-I transition could be originated from the perfect nesting of the Fermi surface and/or the instability of the f electrons.

• OSTI ID: 20664920
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 70, Issue 15; Other Information: DOI: 10.1103/PhysRevB.70.153105; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BCS THEORY
CHARGE DENSITY
CUBIC LATTICES
ELECTRON DIFFRACTION
ELECTRONS
FERMI LEVEL
INSTABILITY
PHOSPHORUS ADDITIONS
PRASEODYMIUM ALLOYS
RUTHENIUM ALLOYS
SPACE GROUPS
SUPERLATTICES
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
X RADIATION
X-RAY DIFFRACTION