title: Spin fluctuations in a magnetically frustrated metal LiV(2)O(4).
abstract: Inelastic neutron scattering is used to characterize spin fluctuations in the d-electron heavy fermion spinel LiV(2)O(4). The spin-relaxation rate, gamma(Q), for Q = 0.6 A(-1) is 1.4(2) meV at low temperatures and increases linearly with temperature at a rate of 0.46(8)k(B). There is antiferromagnetic short-range order at low temperatures with a characteristic wave vector Q(c) = 0.64(2) A(-1) and a correlation length of 6(1) A. While warming shifts intensity towards lower Q, the staggered susceptibility peaks at a finite wave vector for T < 80 K. The data are compared with conventional heavy fermion systems, geometrically frustrated insulating magnets, and recent theories for LiV(2)O(4).
authors: Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
authors: S H
authors: SH
authors: Lee
authors: Y
authors: Y
authors: Qiu
authors: C
authors: C
authors: Broholm
authors: Y
authors: Y
authors: Ueda
authors: J J
authors: JJ
authors: Rush