Quantum interference effects in the induced currents in metallic LaB6 were investigated in pulsed magnetic fields of up to 60T at up to 70K. One of the quantum interference frequencies, corresponding to an area in k-space equal to the Brillouin zone, had an effective mass which was precisely equal to zero. The attenuation of this and other frequencies at high temperatures required the scattering effects of phonons to be considered within the Boltzmann transport equation.

Quantum Interference in LaB6. Harrison, N., Goodrich, R.G., Vuillemin, J.J., Fisk, Z., Rickel, D.G.: Physical Review Letters, 1998, 80[20], 4498-501