New phase boundary in highly correlated, barely metallicV2O3

Incommensurate spin density wave in metallicV2−yOBao1, Broholm2, Carter3 et al. 1993Phys. Rev. Lett.Self Cite957720View full textAdd to dashboardCite

“…In Fig. 1 we show the incommensurate peaks corresponding to (102+ 6') and (104 -h' ) from which we find 6 = 1.700 (2) for y = 0.037 (4). The Fig.…”

“…Four single crystals with a total volume of 7 cm3 were sliced into comb shapes prior to annealing for use in the inelastic experi- (h0l) zones. High pressure neutron difFraction was performed using a maraging steel cell with 4He as the pressure transducing medium.We first characterized the low temperature (T = 1.4 K) antiferromagnetic phase in metallic V2 "Os [2,8]. Antiferrornagnetic Bragg peaks were not found at (2 20), corresponding to the ordered structure of the insulator, but instead appeared as pairs at incommensurate positions (h0l + h) with b = 1.7 and for l -4h = Gn.…”

“…We first characterized the low temperature (T = 1.4 K) antiferromagnetic phase in metallic V2 "Os [2,8]. Antiferrornagnetic Bragg peaks were not found at (2 20), corresponding to the ordered structure of the insulator, but instead appeared as pairs at incommensurate positions (h0l + h) with b = 1.7 and for l -4h = Gn.…”

“…For selected copper oxides, the metal can superconduct while in V2 "03 it is a strongly renormalized Fermi liquid [1] with a large linear specific heat (p = 54 rnJ/molK2 V), a large Pauli paramagnetic susceptibility, yo, and a T term in the electrical resistivity [2]. In response to experiments on Vg "Os and its derivatives, Brinkman and Rice developed a mean-field theory which accounts for the large effective carrier mass and therefore the enhanced p and yo near the metal-insulator transition (MIT) [3].…”

The Mott Transition in Disordered Systems

“…Experimentally, it seems to be realized in three-dimensional transition metal oxides such as V203 [2] and can be driven by varying pressure, temperature, and composition.…”