Erratum:NaV2O4: A Quasi-1D Metallic Antiferromagnet with Half-Metallic Chains [Phys. Rev. Lett.99, 196601 (2007)]

Magnetic frustration effect in the multi-band vanadate NaV2O4

“…Then the double chain structure is expected to have a low dimensional electronic structure with the geometrical frustration. NaV 2 O 4 exhibits metallic conductivity down to 40 mK, and a transition from the paramagnetic to antiferromagnetic (AFM) states occurs at T N =140 K [2]. Above T N , the presence of a ferromagnetic (FM) correlation was reported from the magnetic susceptibility measurement in spite of the AFM transition.…”

“…Recently NaV 2 O 4 with the mixed valence of V 3+ :V 4+ =1:1 has attracted attention as a candidate of the itinerant frustrated systems [2]. This vanadate crystallizes into the CaFe 2 O 4 type structure which has a V 8 O 16 framework composed of double chains of edge sharing V(1)O 6 or V(2)O 6 octahedra.…”

“…Below T N , the AFM3 phase appears at low magnetic fields in the temperature T versus magnetic field H phase diagram which includes the AFM1 and AFM2 phases [3]. The spin structures in the AF phases remain controversial in spite of several experimental studies [2,4,5].…”

Colossal Magnetoresistance and Magnetism of NaCr2O4

“…Because the structure is composed of double rutile chains as shown in Fig. 1, the compound is expected to show interesting electronic properties originating from spin frustrations and one-dimensional electron correlations, as in the case of other compounds with double rutile chain structures [2][3][4][5][6][7][8]. In addition to the structural feature, the compound has mixed-valence state of Cr 3.5+ although less Cr oxides accept a mixed-valence state.…”

Synthesis and structural, magnetic, thermal, and transport properties of several transition metal oxides and aresnides

“…Replacing Ca 2+ in CaV 2 O 4 by Na +1 which makes V mixed valent, the same CaFe 2 O 4 structure is retained but the system becomes metallic even below the antiferromagnetic transition at 140 K. [43,44] [46] or similiarly structured CaV 2 O 4 . [40,41] This unusual magnetic susceptibility provided us with a strong motivation to further study this class of materials and the results are described in Ch.…”