The role of f -electrons in the Fermi surface of the heavy fermion   superconductor beta-YbAlB4
  We present a detailed quantum oscillation study of the Fermi surface of the recently discovered Yb-based heavy fermion superconductor beta-YbAlB4 . We compare the data, obtained at fields from 10 to 45 Tesla, to band structure calculations performed using the local density approximation. Analysis of the data suggests that f-holes participate in the Fermi surface up to the highest magnetic fields studied. We comment on the significance of these findings for the unconventional superconducting properties of this material. 
E. C. T. O'Farrell, D. A. Tompsett, S. E. Sebastian, N. Harrison, C.   Capan, L. Balicas, K. Kuga, T. Matsuo, M. Tokunaga, S...