Elastic neutron scattering in Quantum Critical Antiferromagnet Cr$_{0.963}$V$_{0.037}$

Details Elastic neutron scattering in Quantum Critical Antiferromagnet Cr$_{0.963}$V$_{0.037}$ Elastic neutron scattering in Quantum Critical Antiferromagnet Cr$_{0.963}$V$_{0.037}$

2007-03-28

arxiv.org/abs/cond-mat/0703769v2

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 2 figures, submitted to SCES07 (to be published in Physica B), typos corrected

Scientific paper

10.1016/j.physb.2007.10.125

We have performed elastic neutron scattering studies of the quantum critical antiferromagnet Cr$_{0.963}$V$_{0.037}$. We have found that unlike pure Cr, which orders at two incommensurate wavevectors, Cr$_{0.963}$V$_{0.037}$ orders at four incommensurate and one commensurate wavevectors. We have found strong temperature dependent scattering at the commensurate and incommensurate wavevectors below 250 K. Results indicate that the primary effect of V doping on Cr is the modification of the nesting conditions of the Fermi surface and not the decreasing of the Neel temperature.

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