Published March 3, 2006 | Version v1
Journal article Metadata-only

Spontaneous Formation of Vanadium 'Molecules' in a Geometrically Frustrated Crystal: AlV2O4

Creators

  • 1. Department of Physics, Osaka Prefecture University, Osaka 599-8531 (Japan)
  • 2. Department of Physics, Waseda University, Tokyo 169-5551 (Japan)
  • 3. JASRI/Spring-8, Hyogo 679-5198 (Japan)
  • 4. CREST, Japan Science and Technology Corporation, Saitama 332-0012 (Japan)
  • 5. RIKEN, Saitama 351-0198 (Japan)
  • 6. Department of Physics, Aoyama-Gakuin University, Kanagawa 229-8558 (Japan)
  • 7. PRESTO, Japan Science and Technology Corporation, Saitama 332-0012 (Japan)

Description

We investigated the charge-ordered (CO) state in spinel AlV2O4 by electron diffraction, synchrotron x-ray diffraction, and magnetic measurements. It was found that the CO structure appearing below 700 K is characterized by the formation of V clusters (heptamers), each of which is consisting of 7 vanadium atoms and is in a spin-singlet state as a total. Theoretical consideration indicates that this unique molecularlike V heptamer is stabilized by a strong bonding of vanadium t2g orbitals

Additional details

Identifiers

DOI
10.1103/PhysRevLett.96.086406;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
96
Journal Issue
8
Journal Page Range
p. 086406-086406.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37083024
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM COMPOUNDS; ATOMS; CHEMICAL BONDS; CRYSTALS; ELECTRON DIFFRACTION; MAGNETIZATION; MOLECULES; SPACE GROUPS; SPIN; SPINELS; SYNCHROTRONS; VANADATES; VANADIUM; X-RAY DIFFRACTION
Descriptors DEC
ACCELERATORS; ANGULAR MOMENTUM; COHERENT SCATTERING; CYCLIC ACCELERATORS; DIFFRACTION; ELEMENTS; METALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; SCATTERING; SYMMETRY GROUPS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VANADIUM COMPOUNDS

Optional Information

Notes
(c) 2006 The American Physical Society