Quantum Phase Transition in the Itinerant Antiferromagnet (V0.9Ti0.1)2O3

Details Quantum Phase Transition in the Itinerant Antiferromagnet (V0.9Ti0.1)2O3 Quantum Phase Transition in the Itinerant Antiferromagnet (V0.9Ti0.1)2O3

2008-05-09

arxiv.org/abs/0805.1363v3

Phys. Rev. Lett. 101, 096406 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.101.096406

Quantum-critical behavior of the itinerant electron antiferromagnet (V0.9Ti0.1)2O3 has been studied by single-crystal neutron scattering. By directly observing antiferromagnetic spin fluctuations in the paramagnetic phase, we have shown that the characteristic energy depends on temperature as c_1 + c_2 T^{3/2}, where c_1 and c_2 are constants. This T^{3/2} dependence demonstrates that the present strongly correlated d-electron antiferromagnet clearly shows the criticality of the spin-density-wave quantum phase transition in three space dimensions.

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