Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-05-15
Phys. Rev. B 64, 184435 (2001).
Physics
Condensed Matter
Strongly Correlated Electrons
REVTeX, 8 pages, 12 EPS figures, submitted to PRB
Scientific paper
10.1103/PhysRevB.64.184435
We have observed two spin density wave (SDW) phases in hole doped metallic V_{2-y}O_3, one evolves from the other as a function of doping, pressure or temperature. They differ in their response to an external magnetic field, which can also induce a transition between them. The phase boundary between these two states in the temperature-, doping-, and pressure-dependent phase diagram has been determined by magnetization and magnetotransport measurements. One phase exists at high doping level and has already been described in the literature. The second phase is found in a small parameter range close to the boundary to the antiferromagnetic insulating phase (AFI). The quantum phase transitions between these states as a function of pressure and doping and the respective metamagnetic behavior observed in these phases are discussed in the light of structurally induced changes of the band structure.
Herz Margaret
Horn Siegfried
Horny R.
Klemm Matthias
Klimm S.
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