Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-11-26
Phys. Rev. Lett. vol 84, p999 (2000)
Physics
Condensed Matter
Strongly Correlated Electrons
Submitted to Physical Review Letters
Scientific paper
10.1103/PhysRevLett.84.999
Inelastic neutron scattering reveals strong spin fluctuations with energies as high as 0.4eV in the nearly antiferromagnetic metal Cr$_{0.95}$V$_{0.05}$. The magnetic response is well described by a modified Millis-Monien-Pines function. From the low-energy response, we deduce a large exchange enhancement, more than an order of magnitude larger than the corresponding enhancement of the low-temperature electronic heat capacity $\gamma T$. A scaling relationship between $\gamma$ and the inverse of the wavevector- averaged spin relaxation rate $\Gamma_{\text{ave}}$ is demonstrated for a number of magnetically correlated metals
Aeppli Gabriel
Doubble R.
Fawcett E.
Hayden S. M.
Perring T. G.
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