4 research outputs found
Incommensurate Magnetic Fluctuations in YBa2Cu3O6.6
We use inelastic neutron scattering to demonstrate that at low temperatures,
the low frequency magnetic fluctuations in YBa_2Cu_3O_{6.6} ( K) are
incommensurate, being found at positions displaced by ( r.l.u.) along the direction from the wave vector
associated with the antiferromagnetic order of the parent insulator,
YBa_2Cu_3O_{6}. The dynamical susceptibility at the
incommensurate positions increases on cooling below , accompanied by a
suppression of magnetic fluctuations at the commensurate points.Comment: 11 pages, Latex, 4 figure