TY - JOUR
T1 - Spontaneous formation of vanadium "molecules" in a geometrically frustrated crystal
T2 - AlV2O4
AU - Horibe, Y.
AU - Shingu, M.
AU - Kurushima, K.
AU - Ishibashi, H.
AU - Ikeda, N.
AU - Kato, K.
AU - Motome, Y.
AU - Furukawa, N.
AU - Mori, S.
AU - Katsufuji, T.
PY - 2006/3/13
Y1 - 2006/3/13
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.96.086406
DO - 10.1103/PhysRevLett.96.086406
M3 - Article
AN - SCOPUS:33644773339
SN - 0031-9007
VL - 96
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 086406
ER -